My friend and I had sex 3 times during my two most fertile days. We are both young and healthy individuals. I wanted to know how long I should wait to test for pregnancy and what the possibility of being pregnant is

You need to wait until your period is at least 2 weeks late before testing using first morning urine.

Have you checked into all of the legalities of being a surrogate?

Is the friend you had sex with the gay friend? If so, then he will at least be the legal father. There are issues, and you may be liable for child support. There are many legal issues that need to be cleared up though an attorney.

No way to tell, till you miss a period, healthy couples can sometimes take a year or more to conceive, others do it first time