Should I test or wait ?

I've been feeling really sick to my stomach lately normally I can skip eating til later on but lately I've been needing to eat soon as I get up . Also I'm having cramping in my stomach manly on one side . My last period was June 14-17th this time it was supposed to be the 13th which I bleed for two days and it stopped which isn't normal for me . Has anyone had this happen before ?