Can a woman get pregnant if she has sex right before her period??Helppp 😓

St

My fiancé and I had unprotected sex about 4 days before my period. My period came as planned but since it’s left I feel very sleepy, dizzy and my head hurts almost all the time. I’ve been pregnant twice before both times resulting in miscarriages. I know it’s a stretch but can a woman have unprotected sex a few days before her period and have her period come and end up pregnant from the same sexual encounter that happened just before her cycle?