It is important to consult with a healthcare provider before taking any medication while pregnant, as some over-the-counter cold and sinus medications may not be safe. However, there are some remedies that are generally considered safe for pregnant women, such as gargling with salt water for a sore throat, using honey to soothe the throat, staying hydrated, and taking Tylenol as needed. For nasal congestion, saline irrigation can help clear the nasal passages. If symptoms persist or worsen, it is advisable to seek medical advice.