Really sorry you are struggling so with weight, meds, sleep, fibro.

Couple of questions for your pdoc next time you see him/her.
Is seroquel only for sleep & at that dosage. As far as cost goes, my lamictal is generic & haven't noticed any difference between brand & generic, except price. Also the drug companies offer PAP (patient assistance program). A few years ago this was a life saver for me. Try needymeds.com hopefully it's still a working website, otherwise find out the drug co that makes lamictal & email or call them. They will send or fax you paperwork. Mine was free for a year. Also ask if you need to tweak the lamictal and/or be more consistent with the dosage. About your neurontin for fibro, taking it "as needed" is another question, ask if taking it daily/regularly would be more helpful with the pain.

This is NOT advice or recommendations, just questions to ask. Call if you can't wait until next appt. Hate to see you so frustrated!!
Take care of yourself.