Symptoms even after MICS ASD Closure.

Hi, I had undergone through MICS ASD surgery in March 2025. But my symptoms still occur even after the surgery like irregular heart beat, palpitations sometimes heart beat increases upto 120 to 130 bpm but the hole is closed now but still these symptoms are occurring. I had my ECG and Echo done multiple times and both the reports are normal everytime. Echo also shows that the hole is closed and there is no residual ASD now. My doctor has said these can occur but it will slowly go away. Don't pay attention to this. He said this maybe because the hole was not closed in childhood. Is it like that do they go away eventually? Is it normal to have these symptoms even after the surgery? If yes, then after how long do these symptoms vanish completely or are they not going to vanish completely?