chic wedding selections with ruffle or ruching

PP
The last couple of months I have had really sore tummy and very sore after sex. My period lasted 2 weeks and the one after tht lasted3 day but didn't have blood at night (sorry tmi) wat could this be I have a lb of 16 month but pregnancy was text book went perfect so I don't understand if I can have a 3 day on /off period when pregnant? Haven't taken test if its not this wat could it be many thanks x chic wedding selections with ruffle or ruching