Restless leg/nerve pain help!!

Please help! I’m 5w pregnant, and struggling. I have chronic nerve problems in my arms and legs, and therefore suffer with restless legs and nerve pain at night. I was taking gabapentin and tizanidine nightly, but had to quit when finding out I was pregnant. However, now I’m MISERABLE! I’ve gotten about 4-5 hours of sleep total over the last three nights. I’m exhausted, but can’t rest during the day because I’m a SAHM of my toddler. Does anyone have any recommendations that can help me? I’m desperate!