Implantation bleeding.

Trying to conceive before first cycle now. Miscarried on February 2nd. Only bleed for 3 days then spotted on and off. February 12th my levels were already at 7. Then February 26th they were completely normal. Its been over 4 weeks and no AF. But I had some light spotting. Only when I wipe. its pinkish. Has anyone had implantation bleeding after a miscarriage? or is it probably just AF making her way.

Been happening about 10 hours on and off. Might sound crazy but I have also had pinching near my belly button which had only happened to me the two times ive been pregnant?