Sciatic nerve pain.

tevis
This is the worst!! I can barley walk!!! The sharp pain hits my left side at random times and my whole leg gives out..this is my second baby and I am 22 weeks..i have tried every stretch I can and nothing is helping..I also have a 2 year old to chase so I need to be Mobil!!! Any suggestions on how to make this pain stop..so far its been 2 days of hell.