Is this it?!

My period is two or three days late, not sure if it’s because my body is still regulating from going off birth control about two months ago, or because of pregnancy...I had sex and he finished in me all during my last fertile period, I’ve been exhausted, boobs swelling, had a yeast infection last week (sometimes caused by pregnancy), but the worst part is extreme mood swings, when I’m not at all a moody person. I always start cramping a little before af comes, but nothing...milky discharge too. I took a test last Friday, which would have been a week and a half after potential conception, and it was negative. What do you girls think?!