I'm new to the site too, and in the same boat as you.
I've tried everything! I'm around your weight and size and nothing worked. I really think this site is going to work for me, because I can see what I put into my body on charts and graphs. How my nutrition compares to my calories. In the 4 days I've been using this site, I've already significantly improved my diet because I saw where I was deficient and needed to improve. I've already noticed a huge change in my thinking and energy. I'm not as bloated and I'm in an overall better mood. I was having a hard time before staying under my calorie limit, but now that I can see I'm getting enough nutrition with my calories I find myself having to add extra foods to meet my goal at the end of the day instead of feeling like I'm starving. I'm sorry, I know this is alot to read. But I hope for you the best. And like Kathy said, set your goals lower. I'm setting mine ten at a time. You can do it girl! Message me if you wanna talk.
"Time you enjoy wasting, was not wasted." -John Lennon