It is a blow to your self esteem and support system to have your boyfriend choose to leave now, when you are going through so much. It is very natural to react with strong emotions. And you may very well feel deep grief at hearing this news.
Right now, more than ever, you need to use what supports you have to pull you through this time in your life.
Talk to your therapist about maybe seeing her more often- even if it's just temporary, you would benefit from the support.
Try the support groups we talked about before- you need people to talk to who have been through similar experiences.
It may also be a good time to get away for a while, if you can arrange it- since you have been through so much it may be wise just to leave for a short getaway. It would not only help you revitalize yourself, but you could get time to think through how to handle the recent events.
Be sure to get plenty of rest- it may be hard with all that is on your mind. But try your best to establish a routine before bed with warm milk, quiet time and soothing music.
Eat well- you may not feel like eating or you may eat too much in response to stress. But even if you make the effort to eat dairy, fruit, vegetable, and some protein, you will help your body cope with the stress it's under.
Add chocolate to your diet- chocolate is a natural mood booster. It can help with depression and give you temporary relief.
Read about grief and consider a support group- you have suffered a loss and you need time to allow yourself to grieve.
If you feel you cannot do any of these things and are having trouble coping at all, you may want to consider admission to the hospital for a brief stay. They can help you with support and medication until you feel more stable.