Ok, I've read a lot of credible literature about how Exogenous (Exegenous?) Testosterone is more than 99% percent effective as a method of male birth control. Similar I think to the way that Female birth control pills are made of estrogens. Does this mean that I can cum in my girl even though we are not ready to have another kid? And if this is true, any ideas on how I can convince her of this? Oh, I'm on 1000mgs of test per week. She's not on the pill or any other form of birth control. Is this side effect of the test reliable? Has anyone here ever conceived in the midst of a cycle that included testosterone?