You can be a pro-choice Republican, you can be a "Log Cabin Republican," and as we saw in the CNN debate, you can even be a Palestinian Republican (though I thought that guy was a plant and was proud that even Romney didn't suck up to him). However, if you want to call yourself a Conservative, it is imperative that you be pro-life. That litmus test is a deal breaker.
For example, JimRob has made it abundantly clear that pro choice opinions are not welcome on this conservative web forum, and I agree with him.
Your paranoia is unwarranted.