Hi there! I'm 28 and had gastric bypass Feb. 2004. I have never felt better in my life. I started at 265lbs and five foot five. I'm down to 188lbs. (still 5'5", lol) Obesityhelp has a great website that is full of information on surgeons, insurers, and of course TONS of people who have had the surgery, and those who haven't yet. (just throw a .com at the end of it)
My scar is about 6 inches long, and very thin. Many surgeons are doing the procedure laparascopically now which leaves you with about 6 small "hole" scars. As for the not eating normal part...I can eat just about anything I want, just smaller portions. I don't have a problem with that, as portion control is what got me in this mess in the first place. I don't eat anything with sugar in it, but some people find they can eat sugar without the dumping syndrome. I'm just scared to even try, lol. The surgery is not reversible, except, I think, in extreme circumstances. Personally, I wouldn't want to reverse it anyway. I'd just end up where I began.
My surgeon suggest you not get pregnant for at least 18 months after surgery, so you can make the full effect of weight loss beforehand, and also to make sure you are eating completely properly so the baby can get the right amounts of nutrients. There are several yahoo groups for gastric bypass support, and it's my understanding there is at least one that deals with pregnancy after gastric bypass. I'm sure there is something at obesityhelp as well.
Good luck on your journey, and let us know how it goes. You can also email me through my profile if you would like to talk.