Puke, vomit, PB... whatever

Call it whatever you want....but what gives?  Had a fill two weeks ago tomorrow.... tight but then okay.  Could not eat very much, but could eat.  Last two days, I have not been able to keep anything down (except liquid).  Yesterday tuna salad was a no go.  Had soup for super bowl dinner.... and even that thought about reappearing.  Actually lost my liquid medication before bed last night.  Lost egg today for lunch and just lost some rice, veggies and very soft chicken.  Tomorrow I will just go liquid all day and try to calm down my system.  But I wonder, is this because I am getting my period today or tomorrow?  I know I have read about people getting tighter right before their periods, anyone else have this experience?