Spotting after sex 15wks pregnant

kay

My husband and I had sex and immediately after I went to the bathroom and noticed a small amount of blood when I wiped. I haven’t had any bleeding during my pregnancy and have been having sex regularly. I’ve read it’s very common during pregnancy due to changes in the cervix but I was hoping some other woman who had the same thing could reassure me. I’ll be calling my OB in the morning and letting her know.