My wife hates sex

ok so I’ve been married for four months, had a pretty short relationship before we were married ( like 7 months). Before we were married our sex life was so so.. there was some physical problems that caused sex to “hurt” her and we went to the doc to get treatment. Anyway, she was very sexy and did things like dress up in little costumes and she was very sexy, although our sex sessions were very different, as in one time she would almost be lifeless laying there waiting for me to “get done”. On occasion she would be very very very sexy and fun but rarely. As we progressed in our relationship I told her that I was a very sexual man and that it was very important to me. She told me that she was the same and we were a good match. After each bout of sex she would have to sit in the bathtub to stop the pain and I felt absolutly horrid. I felt almost like I had done something wrong and the guilt tore me up. After the medical treatments for a simple infection she said WOW the pain is gone. We had sex three times that week and I my outlook on our relationship was looking up. We soon got married and I have always dreamed of my honeymoon and had high expectations. I was let down like nobodys business. Yes she did the langerie thing and looked amazing but I am a very sexual man and consider my “skills” pretty good. I was looking forward to the oppertunity to “teach” her things about making love and not just having sex. I soon found her laying almost motionless on the bed waiting for me to “finish” again. I kept my chin up and thought “it will get better”. Soon after the honeymoon we found out we are pregnant. Out of our entire relationship we had one good week of sex and the rest have been completely miserable. When she “does” decide to have sex its almost as if Im FORCING her to do it. She has no interest in foreplay and jumps right to the sex as fast as she can, does what she has to do and then leaves me laying there like I just got hit by a truck.
This is the worst thing. I do most of our laundry and stuff and when I am doing it she has a lot of older clothes that she doesnt fit into anymore. As I am doing the laundry I constantly come across little sexy panties and cute little sexy outfits that she “used” to wear. I look at these and it almost makes me mad that she used to put all that effort into looking sexy and being sexy and now makes almost NO effort at all, what-so-ever. Yes I understand she is pregant, I understood she had medical stuff going on, I understood school was stressing her out…but come on. Am I supposed to just accept that fact that in a short period of time she has completely changed from a sexy underwear wearing hottie to a granny panty wearing nun. She walks around in front of me naked and smells terrific and It absolutely is torture. I love my wife with all my heart but the lack of affection is “seeping” into all my other life activities. I find myself “griping” at her all the time about the dumbest stuff and I know exactly why I am finding things to be upset about… I am starved for affection. When I try to talk to her about it she blows it off and says things like “ go jack off”.. This kills me to the core. I miss the woman I fell in love with. I thought that she said she was “a very sexual person”. Now she tells me she hates sex, and has always hated sex. I feel almost tricked. I am loving being a daddy and the gain is almost worth the pain.. but how can I go on living my entire life as a celibate monk. She is fine with having sex every couple of months. In my eyes tho the once a couple months of sex would be fine if the sex was genuine and not “forced” I mean really good sex can make a guy last awhile with any…but wham bam thank you maam sex doesnt satisfy me at all what so ever and then she says things like “ quit griping I gave you some last week”. I dont think she has even “made love” I think all she knows is plain ole get some and get out sex. And the worst thing is she isnt even interested in knowing what making love is about. I love my wife, I dont want to cheat or have an affair but how does a man go through weeks and weeks of an affection free marrige and still cope with the stresses of bills, jobs, kids and so forth. I am a complex guy and my intimacy and sexualness makes up at least half of who I am. How do I live as only Half a person. This is such a huge problem to me that I have been covering it up and trying to blame it on other things or make up other problems to get my frustration on out. She doesnt understand why I gripe about EVERYTHING because there is literally nothing else wrong. And there is nothing wrong except I am completely emotionally and sexually frustrated and trying to release tension before I explode. I cant talk to her because truth is she doesnt care, She does what she wants when she wants it and even told me the other night that we will have sex when SHE decides and thats why she has the power. I dont want to leave my wife, I love her, but how do I live like this. I feel tricked, abandoned, and ugly… any advise would be greatly appreciated. Thanks in advance