Last period 02/22/13, sex 03/03/13. positive pregnant test 03/26/13. but i sat on wet toilet seat 03/10/13. am i being paranoid thinking i sat on sperm?

Perfect timing: Usually best time to have sex if you are planning pregnancy is within few days of ovulation, which happens about fourteen days before your next period. Supposing that your periods come every four weeks, you had sex on your 12 day and had good chance of pregnancy. It is very difficult to get pregnant by your theory, i would say almost impossible to get pregnant by sitting on a sperm.