Emma,
I was seeing a PT she was like $55 a session, but that just proved too expensive for us. I know a girl I met from Belly has started going to pram excercise classes that cost like $5 each. She said its a great work out and really pushed her, so maybe see if there is one in your area...

As for snacks. I really love to have a low fat smoothie. I freeze my bananas so that I don't have to put any ice cream in... then milk bananas and some honey and wamo yummy!!!

Also tuna on 98% fat free premiums fills me up really well, doesn't sound like it would but it does!