Confused.

About 2 1/2 weeks ago, my boyfriend and I had unprotected sex 4 times while I was fertile. We did the withdrawal method. I am expecting AF in 5 days but for the last two weeks, I have been feeling nauseas, emotional, bloated, sore breasts, urinating way more than usual, extremely fatigued, and feeling just plain odd. I have also had mild cramps which are not as extreme as my usual AF cramps with my Endo. I took a First Response digital 6 days ago and it was negative and again today it was negative. Can anyone relate or have any advice?