Dental Implant uncovering: I noticed blood clot forming on top of the abutment which is hiding it.

My implant surgeon uncovered the implant yesterday (second stage procedure). He placed a flat screw or abutment on the implant which does not protude a lot. I noticed blood clot forming on top of the abutment which is hiding it (looks like red bulb covering). Is this normal ? Or is the gum covering back?