The disapearing act.

I've have been kind of seeing someone for 6 months now. He kind of goes very hot and cold, but he says it's because of work. I sometimes can go a whole week with out hearing anything from him. He is currently on his I'm not speaking to anyone mode and ignoring me again, I'm thinking about just putting a stop to it. After 6 months I would have thought things would have changed by now. I am also 3 days late for my period but that's a hole other worry!!!