Breakeven stretches are EXTREMELY common. The fact that you're not making any money over 6k hands or whatever doesn't mean anything. This is what my .5/1, 1/2 and 2/4 (90% 6-max) graph looked like. Breakeven and losing stretches is simply something you have to learn to live with, they're essential parts of poker.
Ps. And you really, really need to get PT. Right away, chop, chop.