Last week me and my gf had intercourse, during the time secretion of watery discharge from my sperm made her vagina wet. Now she is suffering from stomach pain and slight vaginal pain. Could this be a symptom of pregnancy?

Teenage couple with pregnancy test
It sounds like some of your sperm got into her vagina. If so, it is definitely possible she could be pregnant. To find out, it would be smart to get a pregnancy test done at least 10 days after intercourse. If she does the test before ten days, it may miss a pregnancy so you can’t be certain.