could i be pregnant?

i had unprotected sex like 3 times in a row with him cumming in me the week before my period. my period was late by like 3 days but then i got my period. so i was thinking i was fine. but i’ve been SO nauseous and throwing up lately which is very abnormal for me. and i’m repulsed by food. i just don’t want to eat. nothing sounds good even when i’m hungry. very very sleepy. no energy. i keep having dreams of me or my friends being pregnant which is also abnormal.

i got my period so i figure i’m fine. i could definitely be overthinking. but at the same time, it just doesn’t make sense. any insight?