Pregnant or just PMS

Patient: Hello,I am currently taking ortho tri cyclen lo but missed a few about 3 weeks ago and had an extremely heavy period that lasted longer than a week. Now I am on my inactive green pills and only have a very light brown mucus and no period. For two weeks I have felt like Im going to get my period with extremely tender breasts, i feel tired and faint, crampy and bloated and constipated. I have not had sex yet im preparing for it after my wedding on October 15. Although my fiance and I had been making out and some of his semen got on me. Could i be pregnant? Im so scared that i might be.