Sorry you are feeling so rotten! It could be either or both of your meds. You mentioned extra phlegm, do you have a problem w/ coughing. My DH had been on a BP med for a couple of yrs, before a dr asked if he had a problem w/ coughing. He never associated the cough w/ a reaction. They changed his BP meds 2x after that and he has not had a prob w/ this last med.
Erthromycin can cause a jittery reaction in ppl. One of many reaction for that med. I was given it yrs ago for some infection, don't remember off hand what was wrong. I had such a horrible reaction - my throat started to close. I really thought I was going to die. I had that reaction to Keflex, also. I have a hard time w/ antibiotics and most other meds, too!
I would suggest contacting your dr and asking if there are other med options, not everyone can tolerate the first med a dr gives them.
Hope you feel better soon.
God bless. Alice.