How Can I Quit Velo Nicotine Pouches, And Could Nicotine Be Causing My Chest Issues And Coughing With Blood?

Hi i am using Velo nicotine pouches from 1 month i feel now that my chest has been effected i cough a lot even a bit of blood is coming with mucus what should i do to quit velo nicotine pouches and i want to know is it really nicotine that effects the chest ?