If I had known before surgery what I know after surgery I would never have gone through with it. I'm bipolar and was very stable pre-surgery. From the moment I woke up in recovery, however, I've been on a down hill slide. Depression with uncontrollable crying jags, anxiety, and a very hot temper. After being off my meds for four days, I saw my psychiatrist yesterday and he prescribed two new meds for me to take that were more compatible with my new plumbing. One was okay with insurance. The other, the mood stabilizer, was not, but I didn't find this out until after the psychiatrist's office closed and of course he's out today for Good Friday. I've spent today fighting with the insurance company, the nurse on call and the pharmacy trying to find some resolution but so far to no avail. Even though the surgery itself was an unqualified success, I'm very sorry that I went through it. Maybe when things improve for me emotionally I'll feel differently, but right now all I can say is that I regret it.
My best advice is that if you have a mental illness, think very carefully before going through with WLS, and if you decide to go through with it, make sure that your doctor(s) will be available to you for several days afterward.