Sorry to hear the veggie diet didn't agree with you. Nothing is worth sacrificing your health for.
Happily I had the opposite experience. I'm 35 years vegetarian, am in tip-top condition and don't feel I'm denying myself anything. I suppose after all this time I simply don't consider animal products as food.
Sending you all the best meatless Monday vibes I can muster plus some flowers;) 
Wow, that's brilliant that your diet vibes with you. Some people can handle it.
Lol, thanks for the flowers and vibes.
cheers