Hello and welcome to the boards,
Jaine! 
As
Faith says, you have come to the right place for the support you are seeking.
This next few weeks could be an opportunity to create a support system and start a healthier lifestyle.
It's great you are taking this time while your DS (dear son) is safe, time to focus on yourself, getting your needs met. I commend you for being proactive, we know it's not easy.
You surely do have a lot going on, "sandwiched," as Faith calls it, is a good description. Are you seeing a Therapist (T)? Many of us find working with a T who specializes in BPD to be very helpful.
There is relief in knowing he is in 24/7 care. Yet I remain distressed.
Oh,
Jaine, I do remember feeling this way when my DD25 was hospitalized when she was an adolescent. I only wish I had bpdfamily to help me back then as I was unprepared for when she came home and we usually ended up right back where we were before she was hospitalized! It doesn't have to be that way, we are all learning together how to improve our situations and I'm glad you've joined us and are sharing your journey with us. There is hope, we want to help.
What led to your son's hospitalization? Are you in contact with him? Does the hospital offer family services like joint therapy sessions?
Sorry for all the questions - knowing more helps us get a broader picture so we know how to best support you.
I hope to hear more from you as you feel comfortable, this is a safe place - we've got you!
~ OH