HELP!! Bleeding after sex at 17 weeks?

Hi girls,

I’m 17 weeks pregnant. My husband and I had sex last night for the first time in awhile and it was pretty painful. I just went to the bathroom and wiped and there was blood and cervical mucous. I checked the baby’s heart rate with my doppler and it was 157, where it usually is. I just had an ultrasound last week and everything looked great. My doctor had told me not to go to emerge unless I had a lot of bleeding. There was maybe an amount the size of a quarter that came out. I don’t want to go to emerge if it’s not necessary because norovirus is going around my town bad right now! It just scares me because I have not bled at all this entire pregnancy. Anyone else experience this?