Bleeding after sex+1st trimester

I used to bleed sometimes after sex before I got pregnant. Last night, I had sex with my husband and there was a little red blood followed by pink blood when I’d wipe. This lasted for a little bit. I slept with a pad on and there was nothing on the pad when I woke up. I haven’t had bleeding since. Is this normal? Should I be worried? I’m 9 weeks 3 days. I don’t really want to call the emergency line for my doctor, but I plan on calling tomorrow during regular business hours.