I'm feeling crazy sad

This is not due to one big bad event, but many small ones building and building and I need to cry so bad my head hurts. 
One, in May I got hopeful about this man who showed me some attention, but it was all for a booty call.  That sure made me feel worthwhile.
We have a "unit meeting" for all workers in our line of work at this agency.  A younger and much less experienced worker gets praised for working on fixing up some documents for us to use, in front of everyone, and I have done this multiple times since I've been here but that gets ignored.  But her ass is the greatest thing since sliced bread when she works on something ONCE. 
Next is I have been transferred to another team, with a new supervisor, and everyone is acting like my old supervisor had nothing to do with the decision, yet I hear her in my new supervisor's office talking shit about me, I can only hear enough to know they are talking about me.  I am the only worker from her team, that was transferred.  she has no other reason to be in the new supervisor's office talking about how someone works or does thier job. 
and now several people are going out to lunch, all supervisors included, and I have not been invited.  Everyone around me seems to be having a blast, and I just want to leave and never ever come back.
and I was looking foward to going to swim laps with my daughter in the morning at the local pool, gym, and she is spending the night with a friend and can't make it.