I workout then i eat, but then i feel full?

It all depends on what it is that you ate and how much of it you ate! Generally after working out, it's best to go with something small to regain some of what you loss (as in energy). I usually eat fruit after I workout... I don't eat a meal because I already drank plenty of water and I hate the feeling of being uncomfortably full. Anyhow, go with something healthy and small!

If you consume less calories than you burn, you will lose weight.