Hi I was wondering if any one can help I had unprotected sex 5days before my period I had that one but only last 3days instead of 5 then I start feeling tiered dizzy sick I need toilet every few minutes I do have 2 children already but been a while breast do feel heavy and have got darker next period due 19th may some of these symptoms I do have before a period not all of them could I be pregnant

Yes, if your last "period" only lasted a few days and was lighter than normal, that can be pregnancy, You wait till this period is suppose to come and if you miss it, a week later try a pregnancy test.