Sensitive to touch skin!

Hey ladies! So my left calf has had this sensation two times in the past 3 weeks and now it’s my left front thigh! The best way to explain this sensation is that it’s super sensitive to the touch. Rubbing off my other leg, the bed, loose pants, even rubbing my fingers lightly across the skin... it feels irritated! The past two times on my calf it went away in about a day. Now it has gone to my inner left thigh. And has expanded to the entire front of my thigh! Now not only is it irritated and sensitive to the touch. But it’s radiating this type of achy stingy sensation as well! There is never any rash or anything of that concern, my skin looks completely normal!

Has this happened to anyone before? I’m currently 21 weeks pregnant, but this did happen like I said two times before around 17 and 19 weeks.