I agree with Momma! The other thing about clothing is that sizing varies between brand, male or female, country, etc etc. I may wear a 3xl in one brand an an XL in another. One pair of pants is a 24 and the next is a 28. It's not as consistent as it SHOULD be. So definitely focus more on how you are doing overall and less on the size that you are wearing.
What types of exercise are you doing? Are you targeting your waist area? I know that stomach fat can be some of the hardest to lose for some people. I'm hoping to drop some of mine soon! Whatever you do - just keep going! Don't give up because even slow progress is better than no progress!