Steam inhalation is the best free home remedy! Medicines are expensive and often not safe during pregnancy anyway, so why spend extra? Just use a simple home steamer or a pot of hot water.
When I caught a bad cold in my second month, I felt so miserable because I couldn't take my usual medicines. Taking plain water steam twice a day was my only savior, and it gave me instant relief.
Ghar pe hum sab sardi me garam pani ki bhaap hi lete hain. Bina kisi dava ke sardi theek ho jati hai. Aap bhi din me do baar plain bhaap lo, aaram milega.
Plain steam is absolutely safe and much better than popping pills. I had a cold near my C-section date and steam helped clear my chest so I wouldn't cough on my stitches. Give it a try, it really helps.
I was so scared to even inhale steam thinking the heat would affect the baby! But my doctor said plain steam is 100% safe. Just don't add Vicks or strong oils in it, keep it simple and don't make the water too hot.