vaginapagina | Are these pregnancy symptoms or just side effects of HBC?

I am on birth control and I've been taking it properly. My bf and I did not have sex, but we did grind naked. It has been about 3 since that happened. I am delaying my period for 3 months because i have endometriosis.
BUT, week after week, I've been noticing several things.
1. Breast pain, tenderness and enlargement.
2. Frequent urination (this may be because of my anxiety problem)
3. Severe bloating and gas.

I have taken 3 home pregnancy tests and they all came out negative, but all these symptoms just throw me off so badly.
What do you guys think? Thanks in advance!