So I had sex for the first time on the 22nd of June and he used a condom. We did it again the next day, also protected. I don't think it broke or anything. I bled mostly in the morning a little bit especially when I went to the bathroom. I was stressed about it all for a few days (5 days after first sex and 4 after the second)and then I think on the 26th of June or so (not really sure about the date)I went and got Plan B. It was within 4-5 days of intercourse. The woman there said that she didn't think I could be pregnant or anything and that the cramps and bleeding was normal for my first time, but I got the plan B and took both pills that day at the same time (which she said I could do) and she said I could take the pills with some efficiency up to 5 days afterward.

I don't know exactly when my period is supposed to come (and I know I should have counted more) but it's been 24 days into my cycle and I'm once again really worried that I could have gotten pregnant although I was protected. I'm feeling a little sore in the chest region but I don't know if that's just because maybe I'm getting my period soon or because I went for a run this morning.

I know this sounds really paranoid but I want to maybe know what my chances are? I really don't want to be pregnant because I'm only 21. I'm not on the pill yet but I have an appointment for next week to get it. Should I be worried?