For your cold, sneezing, and sinus congestion, an antihistamine like cetirizine combined with a decongestant like pseudoephedrine can provide relief. Saline nasal sprays are also excellent for clearing a blocked nose safely. The burning sensation in your chest is likely acid reflux, which can be triggered by illness or post-nasal drip. An over-the-counter antacid or famotidine can help soothe this. Stay well-hydrated and rest. If your chest symptoms worsen, feel like pressure, or include shortness of breath, please see a doctor promptly to rule out other issues.