Hey girls!!!

My period was late for 12days! On day 12 I was going up the stairs and tripped causing a massive pain in my stomach after 4 hours or so I went to the bathroom and saw that my period had started. But this time my period hasn’t been like all the other times , I’ve been having a very light flow almost like if my period is ending but it just started 3 days ago.. I just thought this was very weird and wanted your thoughts and comments on this!