I have fibromyalgia but want to have a baby.What muscle relaxants are safe to use during entire pregnancy?

The only treatment I discovered that almost eliminates my pain is by taking 60 mg of Baclofen a day.I feel well enough to get pregnant.I strongly feel I must have a similar medicine to cope during my pregnancy,and I urgently need to know if there is a safe alternative muscle relaxant that is comprable to Baclofen.Thank you.I also take 300mg Wellbutrin,150 mg Ultram and Klonopin 20mg at night.The Baclofen I strongly feel is the best treatment.Thank you