Can I get pregnant if I was wearing spandex shorts and underwear and he was wearing underwear and shorts but soaked his shorts while dry humping?

Nope. No, you couldn't get pregnant as described.
No Pregnancy. This is not how pregnancy happens. Sperm does not survive swimming through clothes onto dry skin and then into the vagina. You are at no risk of pregnancy in the scenario you describe. And remember you only get pregnant from sperm during the five days leading up to ovulation. It is mandatory that every female know when she ovulates. .