Why does my sperm come back out after i ejackulated in my girlfriend every time we have sex ...ive been with her for a year and still no baby ????

Here are some ...: Some 10-15% of couples under unprotected sex of > 1 yr may still not conceive. Now is reasonable time to get a comprehensive evaluation and counseling to define who may contribute to "infertility"; largely and directly, the responsibility to achieve pregnancy lies on women at 50% and men at 30%, and 20% on both men and women. So, seek evaluation timely... Best wishes ...