Do Epsom salts harm baby?

I have tried different flushes but it seems to me that the flushes with 3 Tbs of epsom gives me the best relief. I am hoping to get pregnant someday in the near future but do not want to give up the flushes. Is Epsom Salt safe to use during pregancy if I onlly flushed once a month? Any advice would be appreciated. Thanks in advance.
Rachel Tweet