Anything I can take for congestion/cough? I honestly thought it was just the weather change because…

Anything I can take for congestion/cough? I honestly thought it was just the weather change because (sorry if this is gross) my snot is clear, not green or yellow like it is with a sinus infection. But it's been over a week now & I'm still congested & coughing up/blowing my nose. I physically feel fine! Just wanna be able to breath normally lol