we didnt have a sex never but i had a pach of cum on my trousers although i had my pants on .. am i

My periods have always been on time even when being on birth control for about a year. Recently got off of the pill because of being inconsistent. In September my period came for about a day and a half very light though. In October I’ve became 10 days late and took 4 pregnancy test all neg. my symptoms were feeling very nausea , tendered breast, fatigue and, really bad cramps. then my period came on the tenth day of being late. It was very heavy the first day and then light to nothing the next 2-3 days. It’s now November and I’m 4 days late I’ve been feeling yet again very nausea in fact throwing up in the morning and feeling like throwing up at night as I’m laying down, back pains, really bad cramps as if I’m going to get my period but nothing has yet to appear, sore breast, cravings, but a neg. test. made an appointment for next week hoping to see if I’m really pregnant or not. I’m pretty frustrated only because I’ve never been late nor pregnant and even think my mind is playing tricks on me.