ok... I last had sex around the 11 of feb. got my period the next day. normal cycle. recieved period normaly in March. only now i have skipped April and am still waiting in May. I REAALLY dont think im pregnant since i have had two mentsrations since. Im not under stress. Havent undergone any serious life changing events.. my periods are usually normal except in the last year or so (wasn't having sex then either) when i would skip a month here and there.. should i take a test or is this o.k.???