Could I be pregnant?

I had sex with my ex let’s call him (A) two days before my period ended and he was not wearing a condom and he did ejaculate In me and the next day When I was one day before my period ended I had sex with my other ex let’s call him (L) and he wasn’t wearing a condom either but he did the withdrawal method and the week after that I had sex with a my ex(A) Tuesday of last week and he did not wear a condom and I do not know if he did ejaculate or not but ever since I have been feeling nauseous very tired and mild cramping and now I am bleeding so could I be pregnant by my ex (A) or my ex (L)?