Appointment tomorrow!! Need advice šŸ™šŸ¼

So I have an appointment with my allergist/ immunologist tomorrow. I feel like Iā€™m at a point where my next step would be to try a stabilizer. I have been taking Zyrtec 2x a day, famotidine 2x a day, and Benadryl and prednisone as needed (reactions). Most of my reactions land me in the hospital. My main issues are skin flushing (burning) and throat tightness. I have others but those 2 scare me the most. Iā€™m going to try to discuss adding another medicine. Any advice on which one (or 2) would be most beneficial for my situation? Thank you in advance for any response!! šŸ«¶šŸ¼