Ear, nose and throat specialist prescribed this for me on a daily basis. I thought seeing how it was all natural, it could not hurt you or the baby. In a small 8 oz glass mix warm water with 1/2 teaspoon salt & 1/4 teaspoon baking soda. Make a cup with you right hand, pour some into it and hold your left nostril...Snort the salt water into your sinus cavity. Do this alternating nostrils. This "unstopped" me, plus I have sinus problems yearly, and it has helped temendously. I know lots of people have problems "snorting" anything, kinda like "suppositories....But hey, if it works, go for it! Hope this helps you! Beats medicating yourself and supporting the pharmaceutical companies!