No, and I've always been naturally slim. I'm currently 5'6.5" and hover around 9st 3. I've been seeing a PT for about a year now, mainly just to keep me motivated and keep me exercising and I'd say I probably look the best I ever have. I've lost maybe 3lbs since seeing him, but I've lost about 8-10% body fat, which has really shocked me: despite being slim before with a low BMI, my body fat was v high, putting me in the obese category.
Now I've been regularly exercising hard for a year, I'll do what I can to keep it up: I ran a 10k a couple of weeks ago for example. I feel great, I eat what I want (although always have: but I do eat pretty well most of the time), and my clothes fit better, my H thinks I'm amazing (exercise is important to him but he knows I don't do it for fun, and my natural state is on the sofa reading!). I hope I'm setting a good example to my children too.
I've never had negative feelings about my body, I'm in total awe of what the human body can do: expand, shrink, give life, produce chemicals that can make you feel good (and bad). As far as I know, I will only have one life and one body to take me through it, and I need to ensure I stay strong. That's what exercise and eating well is for me. Maybe a bit Pollyanna, but it's my truth.