1. What is the type diabetes mellitus?
2. What drugs and what dose are prescribed, in the near past and now?
3. Are you on insulin, if so what kinds, long, intermediate or rapid.
On one of the diabetes fora I frequent some have reported problems with the drug Ozempic (Semaglutide) causing gastric distress.
I am very aggressive in my blood glucose management. If the doctor doesnt support me, I will dump them. I have really had no problem with my past doctors. If I do not consent to a drug change, they are fine. Or if I consent, the new drug is on probation.
One thing that may be of concern to you docs is how is your HbA1c 4.8% without experiencing hypoglycemia? It is possible to be hypo without symptoms, called hypo unawareness.
Insufficient blood sugar levels can cause a rapid heartbeat and heart palpitations. However, even if you have diabetes, you may not always have obvious symptoms of low blood sugar. This is a potentially dangerous condition called hypoglycemia unawareness.
https://www.healthline.com/health/low-blood-sugar-effects-on-body
For the past year I have been on multi daily injections (now a pump) insulin plus Metformin. Along with that came a Constant Glucose Monitor. CGMs are great because you can see how close to correct range you are. Because the HbA1c is sort of an average, it can give a false indication when there are highs and lows that give a good number. This chart of 3 7% HbA1c with very different time in range. Courtesy of
https://diatribe.org/going-beyond-a1c--one-outcome-cant-do-it-all

A couple of diabetes sites with community support forums are:
TuDiabetes.org
And
FuDiabetes.org.
Good luck to you