My girl is preg. i stole her from guy who was with her for 2 years. i've been having sex with her for 4 months and she's preg. probably my baby right?

That depends on: The date of conception. Ambiguity can impact both your adult relationship & your ability to support & co-parent with a woman with whom you've had a short-term relationship. Attend a prenatal visit with baby-momma & get things sorted out. You can do dna tests after delivery, but you need to decide now if you can parent whole-heartedly for the child's sake, whether or not you're "bio" dad.

Verification: If she's less than four months pregnant, and they had no contact over that period, you may be the dad. If the timing is not clear, this may need confirmation with a paternity test. The NIPP is a non-invasive test that examines fetal cells that are found in mothers blood. It can be studied as early as 8-9 wks.