Spotting (Dark stringy mucousy)

I’m 5 weeks pregnant and today after I peed and wiped there was some bleeding, dark, mucousy, stringy, I even got a little bit on my underwear.

I am pregnant with my 3rd baby and never had this with my other two pregnancies.

I did have sex with my husband 2 days ago, just nervous because I know bleeding can be a bad sign in early pregnancy.

I have an early ultrasound coming up in the next two weeks and yet I’m very nervous.