Had sexual inter course 1 month ago, having cramps for a week now, been tired and very hungry a lot more, been having different mood swings, my belly has swell up and bloated, been stressed out but stress doesn't usually affect my period, could I be pregnant or is it stress? Please help:-D

Yes, you could be pregnant... or it could be stress.

Three days late is nothing. Three days late isn't even considered being late. When you're 2 weeks late, then you can start to wonder, and test using first morning urine. At this point, it's too early to do anything.

To answer your question, yes, you could be pregnant, it could be stress, it could be illness, it could be weight loss, it could be weight gain, it could be medication you're taking, it could be many things. We can't even begin to guess which of these "could be's" are the cause of this delay in your period. You'll have to wait 2 weeks, test, and if it's negative wait until the next period and test again or get a blood test. If those tests are also negative, time to talk to our doctor about further tests.

Three days late is not really even late, most periods vary by a few days often. Also bloating and swell up, is not a sign at this point. In fact normally no signs but a missed period. So if you keep missing period, wait two weeks to test. Use first urine of morning

Thanks guys, I'll let you know if come on or not:-)