Can bleeding during a pap make the results to be abnormal?

No. Bleeding does not affect the appearance of the critical cells. The current liquid methods of making pap smears usually get rid of the blood.
Possibly. Bleeding during a pap smear could, at least, cover the smear with red blood cells so that the slide/smear is unreadable. The pap smear would have to be done again. If the smear is deemed abnormal, colposcopy would be done, with 3% Acetic Acid so abnormal areas would show up as white patches, and be biopsied.