22F 5'8 198 lbs white diagnosed with GERD, anxiety, depression, borderline personality disorder no medications i use marijuana, have for 5 years i smoke cigarettes, have for 6 years complaint duration- about 5-6 months

ive had a smokers cough for about a year, and within the last 6 months or so it stopped being a dry cough and almost always produces black phlegm/mucus, not entirely sure which. we all know web md is not reliable BUT i cant help but panic when google tells me its either nothing or its cancer, help? ill add pictures in the comments, moderators if that isnt allowed please let me know and i will delete! not sure if its related, but in the last year and a half ive lost about 130 pounds unintentionally, i was obese but made no efforts to lose the weight it just started falling off one day but has hit a plateau and fluctuates between 195-205 month to month.