Bleeding after sex in early pregnancy

H and I did the deed last night. I had no spotting afterwards at all.

But, when I went to insert my progesterone suppositories, I noticed just a little bit of red blood on the end of the insertion tube.

I haven’t had anything when wiping or in the toilet, just on the end of the tube. Is this something I should worry about? I’m 5w5d and terrified of miscarriage.