Er...no. Unless you're not eating a normal veggie diet at the moment. I've been veggie for as long as you, & never considered supplements except for a year 20 years ago when I went vegan. And then it was just vitamin B12. Why do you think you're getting nowhere? Nobody keeps on getting faster indefinitely. Just get your share of brown bread, pulses, cheese & eggs & you'll be getting more than enough protein. Unless you want to be a bodybuilder of course.