Do I see a GP?

When I saw a doctor in 2017-2018, he said this was bc I am allergic to certain stuff and wanted to give me an allergy shot. But this time, sometimes I have palpitations and sometimes my lungs also physically hurt. But there is no problem with my heart.

I have an idea why this is happening but I can't say it out here atm. A year ago I had a bad asthma attack and I gasped for air continuously for 2 nights. Then my GP was still alive and he prescribed certain meds which made me recover in about 7-10 days. We checked but it was not covid and my lungs were ok as well.