2 months dry cough, swollen and painful part on the neck and armpit but its gone now,, then after taking some antibiotic, i have discovered to have thrush in my tongue and starting to have diarrhea.. im getting paranoid over this.. what could this be?

See a doctor: It's probably best to get checked out properly as your symptoms raise my concern. It's unclear what those 2 months worth of symptoms were - in the Philippines TB lymphadenitis (TB of the lymph nodes) is somewhat common. What antibiotic did you take? The thrush and diarrhea likely relate to that antibiotic you took-but to be sure you should get thoroughly checked out. God bless.