I would be quite upset that t offered medical advice about pregnancy and baby delivery. Definitely not his place. And wtf is the bit about his wife would give anything...? That is totally not relevant to your therapy.

I have no idea why he is sending you to the group, but honestly-do you want his non-support? Can you find other support for your pregnancy? Perhaps a grief support group for those who have lost children or a birthing class?

Do you get to choose your OB? If yes, then I would definitely be asking people for names of good ones.