Hi DiamondBe,
Are you RNY? Sleeve? Switch? What type surg.? You might want to find a group that specializes so that you can get surg. specific advice too. Me? I had RNY 5 years ago. I initially lost 130 lbs over about a year.
Focus on protein first. Get about 90 grams in a day. I did this primarily through protein shakes and then added in food from there. Nothing white - no flour, no sugar, no milk. I mixed my protein with water - milk can't do anything for you because you can't absorb the calcium anymore and there's sugar in it. Also causes gas. Stay away from caffeine, anything carbinated, and limit carb. MAKE SURE TO TAKE VITAMINS (sorry to yell that but I'm currently getting iron infusions because I didn't follow my own advice).
Are you following the rules of eating? Nothing 1/2 hour before no food/liquid, eat but don't drink while you do it, and no liquid for an hour after. Sounds like a pain in the butt, and it is, but you won't "wash out" any of your food and it will keep you fuller longer. Also, stick to dense food that you have to chew....close to nature as you can get because processed food has a lot of hidden sugar. Just look at what your eating and try to eat quality stuff because you're eating less food. Watch for hidden fat and sugar. Also, if you have weird reactions to food there may be hidden fat, sugar, etc. The side effects of surg. like the bad reactions to sugar, etc., are more prevalent right after surg. Use those as your police/warning system.
I would also discuss your loss with your doc and nutritionist. You are your own best advocate. There are also great groups online to find more info. But if it's RNY, and you're not losing in the beginning, I'd really questions what's up and start with your doc.
Hope this helps,
Deb