Vegan for a year and a half and still crushing PRs and feeling incredible. Wife's pregnant and has had zero complications, no sickness, nothing. Also, she probably deadlifts more than more people on this thread.

The only nutrients "missing" are B12 and D, which are easily supplemented and/or found in fortified foods (cereals, plant milks etc). And the funniest bit - they only exist in meat because they are supplemented into cow feed. That's right - you're already supplementing D and B12.