22 weeks and bleeding

So I was wearing a panty linger and I noticed I was itchy down there so I went to the bathroom and took it off and wiped and saw blood. It wasn’t filled with blood the piece of toilet paper I had definitely had a good amount on it when I dabbed. When I itched I know tmi I itched near my butt hole and not the vagina so I don’t know if my butt whole is slightly bleeding from me scratching because I have long nails or if it’s my vagina. My husband was very concerned so he looked down there and took some paper towel and he dabbed it on my vagina and said there’s blood but he said he noticed it was red and looked like spots of blood near my butt hole. So I don’t know what it is and I’m scared. I know people spot throughout pregnancy but I never have so the fact that I’m 22 weeks and now bleeding is concerning to me. What do you think I should do?