thank you all for the replies

i called my gynecologist's office today and they told me to wait on a blood test given everything i told them. they said that the combination of stress and the medication changes most likely affcted my cycle and that if i remain calm, my period should arrive within a few days, bc like i told them, i have every period symptom i normally do.
But, i did tell the guy involved that i was keeping it if i was pregnant and that i didnt want him involved in any part of it. to me, any jerk that is telling me to "kill it" doesnt have a right to be involved.
I guess all i can do is learn from this and probably vow never to have unprotected sex again hahaha, well unless i eventually am ready for a child.