Taking Plan B just once can really mess with things (i.e., cause spotting, a lighter period, a heavier period, a missed period, etc., etc.), but given you took it twice so close together? You could really have screwed things up. Either way, you would be highly unlikely to show pregnancy symptoms so soon. If you're afraid you might be pregnant, my best advice would be to live like you are until you know for sure.
Since you did have unprotected sex, even if for a little while, then didn't do anything about it, it is always possible, but I would truly lean toward Plan B messing up your cycle for right now.
I would strongly suggest considering getting on the pill and setting a cell phone alarm to not forget it so you don't have to rely on emergency pills, which are intended for use once in a blue moon.
Best wishes!
Thank you so so much! That's what I initially thought, but then I became worried and thought I might be underestimating things. So I thought is ask just in case. But yes I think you're right, I'm going to play it safe until my next period and then take appropriate measures. I honestly am never this careless I don't know what we were thinking!