Birth control spotting or implantation bleeding?

Hi,
Alright, so I re-started birth control about three weeks ago (I was on it before but I stopped for a month). I started it on the first day I got my last period (a tuesday) and have been taking the pil everyday at 9:00pm ever since. I haven't missed a...

day and was never more than 30 minutes late with it.
I began getting a ltitle blood here and there since this past Sunday (today, Wednesday, would make that four days). It was brownish at first and had little clumps in it, then it would go between pinkish and brownish, until today there was a good amount of red blood that looks pertty much like period blood looks like. I was so happy for a few minutes because I thought my period had staretd, but then the red bood stopped and now it's back to the pinkish that only comes out when I wipe after I go to the bathroom.
I'm terrified that this is implantation bleeding. My boyfriend and I usually use a condom, but we didn't once this month (although it was only for a few seconds, two ins and outs) because we discovered that I'm allergic to latex.
I also know he didn't cum inside me.
I think I've had a cramp, but I could be imagining it because I want it so bad.
I don't know what to think, but I'm praying SO much that I'm not pregnant.
Last time I took birth control, I spotted for quite a few days before I had my period, and then my period lasted almost two weeks. I'm HOPING this is the same scenario, since I started birth control again. I'm also getting really stressed because of this and couldn't even get to sleep lat night.
Can anyone help?
Thanks.

you should not have unprotected sex when you just start taking the pill. so yes you could be pregnant, but the only way to know for sure is to go to the drug store and buy a test, see what it says, good luck