Andy,
I fully understand how the increase and movement in your twitches along with your cramping may be worrisome to you. Regardless of its progression, movement and pain, at the end of the day, it's just twitching and that, in and of itself, is not an indication of anything serious.
Many on this site, including myself, have experienced the same symptoms as you describe and the fears that go with them.
You say you've imagined your feet have become slender. Many of us, including myself, have been there as well. Believe me, you can convince yourself yourself that black is white if you try hard enough. I'm sure they have not actually changed at all.
Think positive and try to minimize rather than focus on what you feel . It's not easy but that and the passing of time will convince you that you're OK.
Good luck.
