I hit my plateay and it was huge. My starting weight was 265 and I hit my plateau at 200-201. I rocked bacl=k and forth on these numbers for about5 weeks and then said to myself "if you aren't losing, you must be eating too much" so I cut out my second protein shake and a snack.. much to my chagrin, I still couldn't break into ONEderland for another 4+ weeks. I finally spoke to the nutritionist who had me run through my day....what I ate, drank, suppliments, water and exercise. After taking it all into account she asked me why I was cutting 2 of my "meals" when I told her, she chuckled and said, "Not only do I want you to put them back in, I want you to mix your second shake with milk instead of water" When I expressed my concern that I might gain weight, she said "you might for a couple days - but you have to trust the surgery...you've put yourself into starvation mode"
So, I took her advice and sure enough my weight went from 201-202-202-203-204-205-205-204-203-203-202-201-200-199 (YEA!!! ONEderland) and continued to go down from there.
My advice, talk to your nutritionist or surgeon...FOLLOW their advice.
(I've also noticed that while I was ion plateau...my measurements would go down to catch up with the weight lost.)

I'm out 9 weeks from RNY. So far, my plateaus have lasted about a 5-7 days.

I'm a year out from sleeve and only really had one plateau, it was at about 3 weeks post op. After that none really. It did seem like the last 10 pounds would never drop off when I got close to my own personal weight goal but it did . I feel the key to not having a plateau is eating enough calories a day, getting 80 grams or more of protein in a day and drinking 80 oz or more of water a day and exercising some each day. This is what I did and didn't have the plateau issue. Change up your cals some days will make you loose too, even when you raise your cals consumed. You are just starting out so the 3 week week plateau is normal. Your body is holding onto everything right now thinking you are starving it is why.
Good luck!

I didn't plateau until 5 months after surgery and it lasted for two months. My weight loss (now that I am at normal BMI) is very, very slow and is bouncing around quite a bit. Seems like I lose more when I eat more. Strange, but true.

Same here! Nothing happens when I stick to 1200-1300 calories. When I upped it to 1600-1700 (on the recommendation of my NUT), I started losing again.

Mine never lasted more than a week. If you have not already done so, start taking your measurements. You are probably still losing inches. Hang in there!!