How to deal with a cold while pregnant? any natural remedies or medicines that are safe?

Salt water: The best and safest remedy is saline, or salt water. Nasal saline or sinus rinses work in two ways. First, they rinse out the virus particles out of your nose so you can clear the infection faster. They also pull the fluid out of your swollen nasal tissues in a process called osmosis. I also recommend Pseudoephedrine and antihistamines to my patients; check with your doctor for specifics.