Wondering??

Ive been having alot of sex with my man and he cums in me each time but I guess he isnt fertile.. But he isnt sure.? Sooo hes been cumming in the past year and I haven't gotten pregnant. I recently got off birth control maybe 1 or 2 years ago and my periods are still trying to go back to normal. The past 4 months my period starts a day later then last month. I was gonna start today but didnt. My boobs dont hurt and i know thats a sign of early pregnancy. Last month my period was short only 3 days then 6 days later I was spotting brown blood? Idk if thats normal. Maybe its old blood idk. Idk if I could be pregnant or if im just stressed as to why it didn't start. If i was pregnant would i have already had pregnant signs??? Or does that take until a fews after missed period to feel anything ?

I know people r gonna say take a test and I will if I dont get my period but I was just wondering if I could be or im just stressed tf out