Hyper tension and Palpitation. To do?

Hi, I have been having hyper tension and high heart rate since 1 month(when i checked). Initially doctor tried stamlo and it didn't work. So he gave Embetta 50mg and asked me to stop it after two weeks and take Telma 40. Once i started with Telma 40, on second day my heart rate went till 190 and i was in ICU observation for 2 days where they gave met xl 50mg to make me feel normal. I was taking it for two weeks and then suddenly i got palpitations again and got admitted in ER for 6 hours in different hospital. I checked with cardiologist and they suggested Concur 5mg. I started taking it and i see few skin rashes. Cardiologist asking me to go back to Met XL 50mg but i am scared it would cause palpitations issue again. What to do?