HELP PLEASE!! Could I be pregnant? Or?

I had unprotected around a time when I could have gotten pregnant. We aren't really "trying" for a baby but we aren't against it either. Anyway, I began to wonder about possibly pregnany because I began having all these strange feelings in my lower right abdomen. Then several days later I started bleeding a couple of days earlier than expected and I just thought it was a normal period starting. But the bleeding was rather light and lasted less than 2 days. It never got heavy, but it was more than what most people think as "implantation bleeding". For example, I did have to use a panty liner, but just one, and there wasn't much bleeding. Even after the bleeding ended I still didn't think I was pregnant. But now it's been a couple of weeks and I'm still getting those twinges in my lower right side. They've been fairly constant these last few weeks. They began a couple of days before Thanksgiving. Lately I've felt really bloated, although my next period wouldn't be due for a couple of weeks. My pants are tighter, even though I'm not eating as much. I just haven't felt very hungry, and nothing sounds good. I've felt super hot lately as well, and not the good kinds of hot...LOL. Like I roll down my window in 25 degree weather because I'm buring up!! I just don't know whether to test or not because I think I will be a let down when it's says negative. I know that sounds silly, but I've kinda grown into the idea and now I'm figuring it's not true and I'm just setting myself up for dissapointment. What do you think!??