Yes, "if" is a subordinating conjunction. It is used to introduce a subordinate clause that expresses a condition or possibility.

Doubtful. Haven't seen that as a condition or possibility on a policy.

Plavix is a possibility, depending upon the condition to be treated. This would need to be discussed with the prescribing physician.

This condition results in a doubling of the possibility "for a specific bio-molecular 'hit'."

A retroverted uterus means that your uterus is tilted backwards instead of forwards. This condition does not effect the possibility of getting pregnant.