In need of advice!

Jessica • Stone cold country by the grace of God

So I've been working out and eating healthier since May. I have a personal trainer and once a week we see what has changed since last week. Lately I've been stuck at 126.9lbs! I've been gaining muscle and losing body fat. I know muscle weighs more but I feel like I'm not really losing weight. I'm thinking of getting a fat burner, but I'm unsure of which one I can get.

Any advice?

(Picture to show that I've been stuck for a while)