I am sorry you have the sinus issues too, as they can make you feel so awful, dizzy, headaches, just lousy feelings. I hope all goes well with the ENT. Keep posting.
I have a allergy to Tetracycline and had an anaphylactic reaction, full blown. Once you have had one, you know you never want another one so I understand your anxiety re meds. I won't even touch a Tetracycline capsule.
Take care and know your not alone.
I am sorry the side effects are so awful and if your feeling that bad on the med, I think you are ok not using it until you can regroup with your physician. Some meds just are not tolerated period, so if you feel this way, then I think you must trust your judgement.
Gentle hugs hun and keep posting.