I noted that I would like to be able to go to the source/rav, to learn his rationale for the particular circumstances. This is little different from when I learn responsa, except in this case I have the advantage of being able to further question the source, and/or challenge his rationale.
Psyched, if you would be so kind, I'd like to contact your rav and ask him about his thinking on the topic. It would help my own understanding. Or, if he doesn't want to be contacted, maybe ask him if he would contact me through our beit midrash website in my signature. You can email directly offline to facilitate this. Thanks!
By the way, i am planning for my 3rd birth and definitely want a doula with me. Not sure if it's going to be some Jewish as I am due on pesach. Still just wanted to emphasize that i still feel it necessary even for multipara.