You've mentioned that you feel that there is no right choice.
Sadly ... you are correct. There isn't a purely "right" choice. Keep in mind, though, that that does not mean that you will make the wrong choice, whether you choose to stay with her or not. What it does mean is...over the long run, there will be pain, and hurt, no matter what you choose to do - the only thing that varies is who suffers the pain and hurt...and that someone may be you.
This fact is something that you will simply have to accept. Being able to accept that will keep you from being "boxed in", emotionally, between your confusion over your feelings for men and your being married to a woman and having a child with her. It'll keep you from being "boxed in" between those two things, whether you choose to end your relationship with her, or whether you choose to stay with her.
I noticed you said you are working to be together...but you didn't say that you two were in (marriage) counseling, only that you were seeing a therapist (which is good in any case). If you and her aren't currently in marriage counseling...I'd strongly suggest that you two seek it out, as soon as possible.
