Hi, I know its health anx making me panic about this so much it only started today, no cold woke with headache snd post nasal drip ,an hour ago I felt , heard a wheeze as I breathed out, now I feel a crackle lower left ribcage area, its making me panic and scared, I need good advice, and any suggestions please, I'm too scared to go to bed, post nasal making me do a fair but of throat clearing, had 2 tiniest bits of phlegm