Rectocele

I recently lost over 100 pounds in a little less than 7 months switching to a Raw vegan diet. While everything else is feeling so much better, I immediately Developed symptoms of a rectocele.
At least That is what I assume it is. Severe pain during a bowel movement that usually takes at least an hour to pass and often accompanied by a lot of bleeding. It feels like my rectum is protruding out several inches during these bowel moments when I feel down there like a hyernia.. I usually circle the area with coconut oil to try and help get it out and not split my skin open or soak in a hot bath and just try to have a movement in the tub. It never ceases to amaze me when I finally do have a bowel movement how small it actually is because when it is coming out it feels like the head of a baby! I also always assume it is going to be hard but it is always soft. The only way I have been managing is either water fasting for several weeks at a time and then trying to introduce soft foods or just liquids. When I do have a bowel movement I'm usually in a lot of pain for several hours afterwards as well. When I am fasting and not having bowel movements I am in no pain.

So since I am not constipated and eat a healthy mostly raw vegan diet I think my issue is something I heard in "The whole woman program" I purchased. She was saying that with rapid weight loss there are two "flaps" of skin on either side of the rectum that can dissolve too quickly and cause problems.

So here's my question… Will the proper posture as well as the exercises fix this particular problem as it would a "normal" rectocele that is due to pelvic floor prolapse? .I did not have these symptoms before the weight loss. I am going to do the program anyway because I know it is a great program, however I just want to know if it's realistic to expect the program to help with my particular issue. And Is there anything else I can do to speed relief. I am currently on my third 30 day water fast because the bowel movements are interfering with my life so drastically I would have to quit my job if I continue having bowel movements right now. Usually end up having to have an enema to get any bowel movement out at this point. Each time I go back to eating slowly I'm always hoping the problem will not return. Strangely enough it comes on slowly the first couple of days when I resume eating and seems fine and then each day afterwards gets worse and worse. After I stop having movements all together this time I'm going to attempt to juice and drink other liquids like homemade almond milk etc. since I do not think it's healthy to continue not eating at all.
Any help or thoughts so appreciated !!!!!

And will regular enemas strengthen these "flaps"? And will the lack of movements weaken them ?

Thank you so much for your time and any help you can offer would be greatly appreciated!!