Ok, wondering if I need revision. Had gastric bypass, lost 100, gained 50 back. Can't eat meat, except for ground beef. Still throw up of eat too much?

No. Likely need to modify your eating habits to accomodate your new stomach size.
Regain weight bypass. There are many reasons why you may have regained weight. It can be your habits like eating too much, poor food choices, not enough exercise, etc., or it can be an anatomical problem with a stretched pouch, a dilated anastomosis, a gastro-gastric fistula, or some combination of all of these. You need to see a bariatric surgeon that specializes in revisions and get an UGI and egd.