A couple of weeks ago, around the beginning of October, my boyfriend came inside of me three nights in a row, multiple times each night. On the third night after we were done I went to the bathroom and noticed I started my period, for the next week I was occasional spotting throughout the day. The week after the spotting stopped, which was last week I believe, I started to feel nauseas whenever I ate, which is still happening. Both of my breasts are sore and enlarged, I have pressure in my lower stomach area which almost feels like gas. I ve also been very gassy. Yesterday morning, I took a cheap pregnancy test from Walmart (one of the dollar ones), I took it with my first urine of the day, but it came out negative. Earlier tonight I was about to get into the shower and my boyfriend pointed out that my nipples were a purple color, normally my nipple/areola is a very light pink, almost as light as my skin color. After a few minutes the purple color faded but now they re a dark pink/red color. Should I take another pregnancy test, if so when should I?