Assuming you're not joking, proceed with caution. If you proceed at all. As others have pointed out you will likely be paying child support. If you're in a position to, OK, however there's other things to consider. Will the kid ever know its father? Also, how well do you know this woman? You...
The premise is simple.
Post known Space Corps Directives or your own Directives.
EG 34124: No officer with false teeth should attempt oral sex in zero gravity.
Or, 33193: Any Crewman caught in indecent acts with wet celery will receive a promotion to the rank of Colonel.