Testing

I have unprotected sex with my boyfriend all the time. On the 18, he finished inside me when he tried to pull out. I took a test yesterday and it was negative. Should I be good ? Or wait a few more days to retest. Btw.. I’m not on birth control! And few days ago I’ve been having a brown/pinkish coming out of me. It was weird.. it would stop the whole day and then the next day it would come in the afternoon. Then late night it would stop. I’m very confused.