On June 16th, so about 3 weeks ago I had unprotected sex so I took the aftera pill 3-4 hours the sex. Also June 16th was my first day of being fertile in my cycle, so day 1. Anyways i bled a couple days after the pill which I read was common after taking it. Anyways right now I am 5 days late and I threw up the other day, however, I took 4 pregnancy tests and they all came out negative. I am very stressed so many it's delayed because of the pill and being stressed and maybe I threw up being my nerves are so shot but idk I just really need advice. The negatives in the pregnancy tests aren't adding up to the late period