I Keep Feeling Shaky. On The Inside. I Feel Like

I keep feeling shaky. On the inside. I feel like I am shaky on the inside of my body and it is a very uncomfortable feeling. Also, my both legs are shaky, weak, and they ache. My legs hurt and I have pain in them. Also, I will get sweating attacks. No one else in the house is hot or sweating, but I am. I am not diabetic and the only medicine I take is estrogen and progesterone for about two years now. I had MRI of my brain recently and that was fine. Thank you for any advice you can give me.