I told my husband the same thing. He went into this marriage with the full knowledge that he was attracted to men. He took away my autonomy and ability to make an informed decision. When I found out he'd been "fantasizing" during sex with me, that was even worse. I felt absolutely disgusted and violated.
I love my four children more than anything, but I look back and he was the one that initiated each pregnancy, and I wonder - was it because he was trying to fill a void, was it because he was putting on a front of the happy heterosexual husband and father - not because he loved me and wanted to create life with me and build a family with ME. Especially since when I look back, the first shift in our marriage happened after his vasectomy. It is very, very hard to deal with these feelings.
I agree with the people who say to seek a new therapist. I didn't intentionally seek someone who dealt with trauma, but it turned out my therapist's specialties were trauma, PTSD and anxiety, so I think that's why he was easy for me to worth with.