Can it be that i'm pregnant or just late on my period? iv been stressing out for the past month my last period was irregular and now i'm late 3 days ..

Yes : Yes you could be pregnant. If you have done a home pregnancy test and it is negative, then it is more likely that you didn't ovulate. Are you trying to acheive pregnancy or prevent it?

Maybe: You can find a urine pregnancy test from several makers at your nearest dollar store. A first morning pee would be more concentrated so it would be a good one to test. Why stress when a buck could answer your question.