IS IT REALLY HAPPENING?!

Okay, this is gonna seem a little weird but I had sex a month ago, 2 days before Glow predicted AF to come. I have irregular periods sometimes. Anyhow, I was 4 days late according to glow but on the 3rd day I felt a sharp pain which could’ve been ovulation pain, spotted brown and pink after that and then bled red for 3 days. It has been 2 weeks since I’ve stopped bleeding and for the last 4 days, I have been nauseous, have had food aversions with my some of fav foods, slight cramping and a little pressing feeling, my breasts have been very tender all over (not just my nipples like during my fertile period), took a hpt last week and got BFN. I don’t want to be pregnant but will be happy if I am. Today, few hours ago, my boobs were hurting so badly I got up to look in the mirror and they are perky, I have big boobs anyway but they aren’t usually perky like this... and i pressed one of my nipples to see just how sensitive it was and fluid came out, clear and white... tried the other one and same thing happened! Has this ever happened to anyone if you this early in pregnancy? Did it happen when you weren’t pregnant? What are your thoughts?