Strong B.O. after becoming a vegetarian?

I have never had problems with odor in my life, but these past several months my armpits have not smelled great (pretty awful, in fact). The only major change in my life that happened before I noticed this issue was becoming a vegetarian. I've been reading up on sudden changes in B.O., and people have suggested that it's stress sweat . . . but constantly for this long ?? I've suffered with an anxiety disorder my whole life and never dealt with stress sweat. I'd been using the same brand of deodorant for YEARS, and it doesn't work at all anymore. Been trying a new deodorant recently to see if maybe it had something to do with the old brand, but no dice. I seriously want this to stop. I shower daily, even wash my armpits a second time with a wash cloth if I'm really self-conscious later in the day.