There Is Slight Pressure In My Chest And I Feel

There is slight pressure in my chest and I feel like at 85% breathing capacity. I've been feeling this way for a month.... But this week also these symptoms occurred: I heard a raspy, light crackling sound in my chest two nights ago. I have a slight burning in my throat. No fever or chills. Energy level is fine but something seems to be wrong in my lungs or chest... affecting my throat and coughing a lot the first hour I wake up in the morning...