I'm 18 weeks 3 days and last night, (TMI) my husband fingered me and might have been hitting my cervix. Well, after we were done, his fingers were covered in dark red blood. This is my third pregnancy and he told me its probably that I'm just sensitive. So we had sex and when he pulled out, he had the same dark red blood on him. It stopped this morning (12 hours later but I was lying down most of that time). Is this normal?