Is it possible for me to have reached a plateau?

Is it possible for me to have reached a weight loss plateau, even if I didn't work out in the beginning of my weight loss? What I mean is, I lost about 15 pounds at the end of the summer because I wasn't hungry and my appetite just decreased. I really don't know why but it did. Anyway, I tried to gain the weight back at one point but I couldn't. Now I'm trying to be "skinny fit" instead of "skinny fat" I started dieting 2 months ago and have been working out since, but the weight is coming off everywhere but my stomach and love handles and it's honestly just annoying and gross. It seems like I reached the point where my body won't budge and I really have no idea what to do. I don't measure and I only look at my fat percentage through those machines at a gym, but I stopped because they seem so inaccurate and make me feel worse about my goals. I'm 115 pounds, female, 18 Years old but on have Waay too much fat in my middle section and I'm so skinny everywhere else. I try to gain weight everywhere else by doing weights so I don't lo ok like a stick, but I want to be healthy and fit. I'm sorry this is so long, and thank you to anyone that answers.