Confused

Ok so af was due yesterday. I started to cramp three days before and when I went to the bathroom found blood as if I had started very little though. So four hours later went to nth room again and there was no blood at all on pad. Yesterday I went to the bathroom and saw more blood as if af started. Put on a pad four hours later went back to bathroom and nothing. No blood or anything in pad. Yet I am still cramping and my boobs are hurting. I am confused. Anyone have any ideas on what's going on