You are no longer alone! Have you a list of symptoms etc. when you speak with the Prof.? Several ladies here have good experiences as he seems to understand female hormone issues. Make sure that you jot down his replies to any queries, even if you need to say "Are you able to pause whilst I jot that down 'cos I won't remember". He may be willing to send your GP/yourself a letter with his suggestions.
Your GP should have been able to give you something for a long bleed, did you discuss the problems? We tend to let things go when anxious/depressed, hoping it 'will be better tomorrow'. However! Be kind to you. Some ladies keep a mood/food diary which helps chart symptoms etc..
Once you have sorted out the hormones then maybe tackle any weight issues? There is a lot of support 'out there', maybe your Surgery has a dietician you could chat with, or contact your Leisure Centre to see if there is a Personal Trainer you could get advice from. Little steps. You have lost the weight previously, so don't rule out success again! Could it be hormone upheaval contributing to holding onto the weight?
Curling up in a ball is instinctive. It tells others to go away, it enables the person to begin healing ……. but it does tend to mean we don't eat/sleep/exercise when we ought to! [been there etc., survived!].
This too will pass. Try not to take on too much at once. Learn to say 'no' to others. "The Change" is that, an alteration of what we have known as the body begins the next stage! Bugga …………