Is it normal to..?

Okay, so I had a BFP this morning ( 3 days before AF scheduled to be due, 11-13 DPO ) & Im pretty sure I experienced implantation bleeding on January 11th, because of its color & lightness. Anyways, is it normal to feel bloated & it be somewhat hard due to the bloating just below my belly button & down?? I know I'm not far along enough yet to be showing, but has anyone else had this??