Hi 
Soak barely overnight and drink this water in the morning to have relief from swelling. Give warm and cold water compress for back pain. 
Please read this article 
<a href="http://app.babychakra.com/article/4110">Back Pain During Pregnancy?. These 5 Solutions Will Fix It</a>

hii i am in my 6th month almost completing it.. quiet a few days i am observing muscle pain in my back and hips area and also there is swelling on the foot from anklet area till toes. what should be done to reduce both.