So upset💔😩

I've always struggled with my weight. My son is 3 this past June. When he was born I was 200 lbs. I got down to 165 after 2 years. I'm now back to 195. Please help! I've tried everything and eating right and exercising. Nothing works!! Suggestions please! My SO is 175. I HATE him being smaller than me. 😔 please help me😁 I'll be 24 in January.