Could I be pregnant?

I had sex three times this week multiple times a day. Earliest day being 7 days ago. Both vaginal and anal. We use a condom only for vaginal. He doesn’t cum in ass except for the first time today. Ive been on birth control for five months. Should I be okay?

I’ve been nauseous and having extreme abdominal cramping since 10 days ago because I am suspected of having endometriosis and I often get ovarian cysts so these symptoms have been causing me paranoia.

Should I be concerned?