Running on Empty

Lately I feel like I've been running on empty.  I'm exhausted all the time.  I come home from work and go to bed and lots of days I'll sleep until the morning.  I know this is due to my IIH and stress which triggers the symptoms.  Work is going well and isn't the issue.  I just can't shake this feeling that this is it.  This is my life and it's not going to change.  Maybe it's not in the plan for me to have a family.  Maybe finding that great love just isn't going to be part of my life.  It leaves me feeling very empty and hopeless.  My life cannot consist of only what it is now because then there is nothing to look forward to.  How do I accept this?  Is this really God's plan for me?  I'm feeling very broken and need a boost.  I've got to get myself out of this funk!  I've been praying for God to lift this heaviness from my heart.  I remind myself of the good things in my life- friends, family, job, etc.  I just feel like part of me is missing.  I want to be a mother and I want love.  How does a person accept that maybe this isn't going to happen for them?