You look amazing! Glowing and happy. Your before pic, you look beautiful and happy too.
Yes I too worry I'm losing weight to fast. I did this surgery because I had sever back pain and a herniated disc. I never want to be stick thin, and I want to be healthy, so I get your fear.
The tightness is the restriction, and don't worry it will get better. Two bites also made me full but now at 8 months in, I can manage eating half a sandwich (it takes time though). So it will get better, just hang in there. Some ppl even miss this period, I am not one of those people.