epsom salts chemical imbalance

Hi, I have flushed 4 times now. I've passed around 3 paper cups full of stones. I was diagnosed with IBS but now feel very well.

I have just started with spasms in my arms and a little in my legs. I went to the drs and he said I might have caused an imbalance using Epsom Salts I,m having my bloods done tomorrow, won't know for 2 weeks.
Has anyone else had this problem with Epsom Salts ????
Please let me know thankyou Julie