Blood at 4 weeks

So I am 4 weeks and 3 days pregnant today.

The day before my missed period I went to the bathroom wiped and saw some red blood. It was more than spotting but not super heavy and I didn’t have any cramping. I thought I was starting my period but I didn’t have any bleeding after that that. I am now 4 weeks and 3 days and still not a drop of blood. Curious if this is normal or if I should be seen? I feel fine but just want to ease my mind. Thanks!