hmmm. it could go either way. Cramping is normal during early
pregnancy.
Bleeding can be common too.... If it is very painful, I would say it is very possible for this to be a miscarriage. Hoeever, one persons idea of painful is diffrent from anothers. Exactly what is considered normal cramping pain & what is miscarriage Cramping pain. At 4 wks it could be very hard to tell the difference.
All that being said, I think you need to call a doctor. Is it a lot of bleeding?