am i pregnant?

so i had sex on the 17th and it was unprotected. i took Take Action emergency contraceptive immediately after. yesterday (the 21st) was my approximated ovulation day and today i had brown discharge out of nowhere! does this mean i am pregnant? i’ve read that brown discharge is sometimes the effect of emergency contraceptive, but i’m scared. my body is still adjusting bc i just got off birth control about two months ago, so my period cycle changed from the 16th to the 6th of every month. i’m

not sure if this is just bc of my hormones but i never have random brown discharge. and it doesn’t smell like blood either. i need help