Little bit of blood

Iv been having brown discharge on and off for a few days now and last night I went to the bathroom and when I wiped there was some red blood. Not a lot and it was just that one time. Once I wiped that was it... it hasn’t been like continuously coming if that makes sense. Lol. I went in to get my hcg levels checked today and should get those results within the next day or two. Should I really worry or is some blood normal? Iv had two kids before this with no bleeding or problems so this is new to me. By the way I’m supposed to be 6 weeks 4 days today.