hey ladies. I have a question. I'm 26 weeks pregnant today. With my fourth child. my legs keep…

hey ladies. I have a question. I'm 26 weeks pregnant today. With my fourth child. my legs keep getting numb? I never had this happen before. Do any of you have any suggestions on what I can do to help the numbness. i went to the doctor he said its the way my baby girl is laying. Also im not sleeping hardly at all.