That's a sucky feeling, I know. Given this statement, it rather sounds like your triggered by something that fits with your own story and view of yourself.

I wouldn't read too much into what she's wearing. She probably tugged on that skirt because it was uncomfortable to wear. (many women don't like to wear skirts that often and are just not comfortable in them.) Regardless of what was going on with her, you're assuming her behavior is a comment on you, specifically. This is a cognitive distortion (I have them all the time, we all do.) Your T is a whole person with a whole world of her own thoughts and motives.

I'll tell you what a therapist told me once when I started to go down these kinds of self-defeating assumptions about other people's actions; "No offense, but it's not always all about you." It sounds harsh to say but sometimes it needs to be said. People have a 101 reasons for doing things. Your T presumable sees a lot of clients all day long, why would you assume she's changed her outfits just for one?

I know I often get sucked into the idea that my T shows up late, or early, or wears that shirt just for ME... but that's not totally realistic. It's just some part of me that wants to believe that I'm special and have influence in her daily life. It's okay to feel that need that but when it starts to feed that self-laothing narrative I have to check myself.

I hope you can see where your own "women are creeped out by me" narrative is making this feel worse. Give yourself a break, be kind to You and maybe consider talking directly about this with your Therapist to dispel that idea.