My DH has had a similar though not as severe response to the births of our 3. My 3rd was the worst for him as we were in hospital for the longest part of the labour. We are in discussion about it, but I am thinking that if we are blessed with a 4th, then I will hire a doula and he wouldn't have much of a role or possibly not be in the room for much of the birth. This is also in part because he has not be a fantastic help during labour (i.e. He napped for a fair bit of the last one!).