Im confused and worried

well me and my ex got back together ON MONDAYS AND WE;VE TALKING COOL AND TEXTING EACH OTHER but well I really havent heard nothing for like 2days and ahalf now should I worry I tried calling but his phone is off, I really love him and he told me he does to and hes nice and everything but im starting to worry

When ex boyfriend/gfs get back together after a breakup, chances are it doesnt work the 2nd time around. Whatever caused the breakup in the first place, never seemed to have gotten resolved. They may think it has, just because they get back together again, but it really hasnt!
Even if his cell wasnt working, there are other ways of contacting you. I guess if I were you, id call his house phone, see if he answers that. If you are getting the run around, it say it doesnt look too promising for you.

Yeah, I guess an x is an x for a reason.

Sounds like he may really like you too- lust - attraction or - whatever you want to call it, but he is not going to do anything but play you.

He knows how to get a hold of you so he's just doing like he did before. He'll hurt you if you let him. You'll have to be the strong one and just say no the next time he comes beggin' to your door.

You need to talk to him and fast. The fact that he got you back and then doesnt call you in 2 days and it hasnt even been a week yet isnt a good sign. He hasnt even called to see if you are ok or anything! bad sign, is this what you wanted to go back to? please re think whether it was a good idea getting back with him, its true, an ex is an ex for a reason.