Blocked Nose. Feels same having cold.

Hello, I have allergy and catch cold frequently with running nose. Untill running nose is fine, I manage. But sometimes the cold increases and leads to throad pain eventually leading to fever. In this case I have to take medicine, like last time I consulted doctor and had amoxyllin and montair Lc. I avoid taking cold medicine, but in rare case whenevr I take my nose gets choked up completely. Its not like I have stuffy nose or cough,it just gets dry and blocked making it very difficult to breathe. Only taking otrivin nasal drop relieves it for few hours but I have to take it atleast 3 4 days before becoming normal. Seeking advice on what to do, I cannot avoid medicine in some instances, and whether taking otrivin for nasal blocking is fine. Or is it something else like sinus. Or does everybody feels same having cold.