Sorry your feeling this way, sounds like your pretty mature for getting the help that you need. Don't give up, and don't give in to a boyfriend thats not working out. Although, I don't have much room to talk. Let me know if I can help.

hiya hun.
have you spoke to your mum and told her how you feel with the fun making. therapy isnt given out to just anybody, and your trying to help yourself get through these sad times.
your right about not being with somebody you dont want to be with, it could be a set back for you. you be strong and be proud of yourself for your achievments. im proud of you and im sure most ppl on DS are aswell. you no where i am xxx

I see from your profile you are 22 and new to DS. Welcome. You say your Mom is pretty young and makes jokes "on you". Perhaps she does not understand what you are feeling and what you are trying to accomplish. Perhaps having your therapist talk to her would be a good idea. Mom needs to know how important your treatment is.
If your relationship was not working after 4 years, and you tried and tried and it still failed, it is probably not the relationship for you. That has already been reasonably established and you made your decision. Don't let him play on your emotions and resume what has already proven to not be good or right for you. It had it course, it proved itself, .. it is done. Probably nothing has really changed since the breakup to make another attempt worthwhile.
For now, relax, .. work on getting Mom "educated", and make a plan for yourself. It might be getting out on your own (if you live with Mom/sisters), or anything that would be good for you. You need to gratify yourself, be good to yourself, heal, improve, and sort out what you need to be content with your situation. Go slow. Small steps. Do not step backwards, .. only forward.
Help is here, .. to the extent we can provide it. Good luck. Continue to post if you are so inclined.