help this is urgent!! am i pregnant?

Daniela

i had unprotected sex (this was my first time having intercourse) because he didn’t want to use a condom after i told him it would be best if we did but he said it was fine because he doesn’t finish easily. he didn’t finish while we were having intercourse. but i haven’t had my period in 31 days and i have a normal flow. i took two tests, both negative. i am spotting i have brownish discharge instead of my normal flow. i feel nauseous after eating, diarrhea, and fatigue. i’m going to get a blood test done next week but it’s all i can think about. could i be pregnant? if not what else could be going on?