I'm three weeks post-op (MGB) and my weight the day of surgery was 232.6. I'm 5'4". My comorbidities were hypertension, asthma, and sleep apnea - all severe.
I agree with Lin in that if you're not sure, then diet again. See what happens. Then if it comes off, see if it will stay off.
If you're pretty sure you want surgery? GET IT. Not for the weight loss, even, but for your health. Bariatric surgery, especially the kind with a bypass, has an immediate effect on blood pressure and blood sugar. And for many of us, it has a very rapid effect on breathing disorders. I don't know why - I think it may have to do with the huge change in metabolism caused by the surgery. But I know it happens too often to be a coincidence.
I dieted down to 167 a few years ago and held it there for awhile. I was still severely hypertensive. I had chest pain that raised my sed rate enough to scare some ER docs (they couldn't tell if I was throwing a clot to the lung or having a heart attack). I ended up having an echo that showed an enlarged heart - at 167 pounds. Overweight, yeah. Not fat. But as my exercise tolerance decreased, my weight increased. I was always hungry. I was always angry at myself for failing and being hungry.
Three weeks post op I am mad at my scale because I've "only" lost 19 pounds since surgery. Did you get that? I'm pissed off because I wanted to lose 20 pounds in three weeks. Instead I lost 19. Ooohhh, sooo mad. Until I remembered that losing 20 pounds normally takes me three months of hard work. And now I get to do it with normal blood pressure, even at my 200+ weight. My chest doesn't hurt. I haven't needed my inhalers for two weeks now. My life is completely, utterly changed.
I'm not trying to sell you on a procedure or a life you don't want. Living after any WLS is still hard - but it's a whole different kind of hard. I haven't had bread or meat or milk in three weeks. I live on Gatorade G2, V8, beans and cheese, for the most part. I'm still tired a lot and haven't exercised a lot yet. But I'm not wheezing. I'm not snoring. I'm kind of freaking out about the number of vivid dreams I have every night - I think it's a reaction to not being on CPAP and getting my REM sleep for a change.
It's not an easy decision, WLS. Nobody can tell you whether it's right for you or what procedure is your best option. But I can tell you that it won't hurt to try the diet one more time before you decide. If it works, great. If not, WLS is a viable option.
Good luck and best wishes, whatever you decide
Julie