Getting healthy

I've been trying to eat better lately & have healthy snacks in the house. I just recently started eating Activia & Stonyfield farm probiotic yogurts. I've been having some stomache issues for a few months. I'll be seeing a nutritionist at the end of the month. I'm hoping she can help me. I saw her around 3 years ago. What healthy foods & snacks are you favorites? I'm looking for any ideas people might have.