A little problem😭

Hello there, two days after my period it was started the breast pain. Now it’s the 15th day of that pain but it’s worst. I receive treatment with Cerelle (anti-contraceptive) to start them on the first day of my period because i am suspected of endometriosys. My period was very very light and pinky this month and was to long. We try to conceive since march last year. I made a pregnancy test yesterday and it was negative. I don’t know what to do. I can’t go to the doctor till next Thursday. If i am pregnant and that wasn’t my period (I don’t know what was, it was so different), if i am pregnant and it’s too early to find out, what can i do? It’s ok to take these pills? I need to stop them? Today i had a nausea, i started to have too much gas 🤦🏻‍♀️( this is not usually for me). I don’t know what to do, i’m a little desperate 😢 was this happened to anyone?