Pregnant women are prone to cold due to many changes going on in our body + hormonal changes. Plus do go for a check if you have any infection going on like UTI which is very normal during pregnancy but still need to take prescribed antibiotics. If no infections, you can rub menthol Vicks on your chest, drink more warm water, shower with warm water and wear socks to sleep or cover yourself with blanket. The cold may take some time to go away. Just have plenty of rest also.
are you in your 1st trimester? if yes, then it's pretty normal cause your body is going through a lot sudden changes. it will get better once you're in second trimester.
Drink ginger tea
Maha Lakshmi