Holley, welcome. Hair loss after any surgery is common. I don't know why, but I read it on a government health site, probably the CDC. Oh, I remember, it has an actual name, which is ____ shock. Your body responds to surgery in many seemingly unrelated ways. I think I posted photos of my hair loss on my profile page. It wasn't that bad but it was right up front in my bangs. So I started buying a lot of pretty scarves to wear as headbands, and I liked the look so much, I still wear them occasionally.
Our group is really amazing and everyone here wants to support you and answer your questions and share their experiences. And back to the federal websites: that's a very good place to read and search for answers. We usually have similar experiences, but not always. I've been here for about 14 years and have only read one negative post about surgery results in all that time.
I also had a knee replacement, and man, that's worse than anything I've ever experienced. I had to keep a phone in my bedroom to call my roommate to help me get out of bed and steady on the floor before I could even limp to the bathroom. Eventually I kept a urine container next to the bed so I didn't have to do that. Knee surgery takes a long time to recover from, but I'm so glad I did it. I was in so much pain all the time. Once my knee healed, I just walked with pure joy. I had been a hiker in the North Cascades mountains before surgery and almost couldn't get down from the mountain on my last hike before surgery. I was scooting along a rocky trail on my butt in the dark in these scary mountains!
Anyway, joint replacement can be the greatest thing in the world if you're living with pain, especially when you're carrying too much weight. I'm in my 70s and still hike these beautiful mountains, as high as 6000 feet elevation.
I had my procedure before laparoscopic RYGB was possible, and before I ever heard about the sleeve, which apparently wasn't accepted back in those days. If I had it to do over, I wouldn't change a thing, except I'd go laparoscopic.