I think 95% of the people on this forum have experienced this same feeling, so you are not alone
We look at ourselves every single day, likely multiple times a day, and it's difficult to see the small changes over the days. But those small changes each day add up over time. I bet if you woke up tomorrow at your highest weight, you'd notice the difference!
As you get closer to goal, each pound will make a bigger difference. Just in the last 10, even 5lbs, I have gone from feeling like an average-to-chubby person to an average-to-thin person. And I still do not have an accurate perception of myself. My friends say I'm TINY, but I still look in the mirror and see thin side of average. Which I'm happy with, don't get me wrong. My very skinny friend and I weighed on the same scale the other night. She was 135, I'm 138. She's maybe .5-1inch taller than me. She wears a size 2-4 sometimes 6, I wear a 4-6 sometimes 2. And seeing these numbers logically tells me that I am skinny, but I still don't see it, haha. I look at her and see very skinny girl. Her and I are practically the same weight/height/size, but I don't feel close to her skinny-ness.
Also, if you aren't already, I suggest weight/strength training. I lost 35lbs and had the exact same shape, just smaller. This displeased me. Now that I've been weight training, I am starting to get a much trimmer silhouette that I initially wanted. I can definitely see the difference now.