So, my boyfriend came back home from a long business trip on the 27th of April, we did have sex without a condom. 2 days before ovulation. Not even 24 hours later on the 28th I went out and bought plan b. About a week later, my breast were tender and i felt nauseous a bit. My period was scheduled for the 18th this month, and exactly on the 18, I had light bleeding that looked like the start of my period for one day. And I was spotting for the next three days. I feel as if I'm ovulating today because I have discharge and slight cramps. but i'm not completely for sure. Do you think there's a chance that I could be pregnant? I'm more worried because I've been taking tylenol with codeine and a lot of ibuprofen. I also had a ct scan and a few x-rays done last week. Let me know what you think. Thank you.