ECG Reading. Kindly advice further.

I was reffered to Psychiatrist by Cardiologist at hospital when i was admitted at hospital due to racing heartrate and heart pounding, and Psychiatrist said that I had Panic Attack. Took medications for 2 weeks. Clonazepam 0.25mg and Propranolol 10mg. Had recurrent Panic Attack Symptoms of racing heart rate which is only at night time by 3 am with heavy gas trouble and chest discomfort, almost all day. but heartrate was below 120bpm and when i walk during this time, anxiety and heartrate and heart pounding reduces. 2 days before at night 3 am, i felt something bad is going to happen again and anxiety and fear increased and heartrate also increased. After 5 minutes of walking it reduced and again after 5 minutes, fear started arising that something is going to happen and again heartrate started increasing and not above 120bpm, and hands and legs started shivering. After 1 day i went to take ecg in a private lab. Discharge summary and new ECG is attached. Kindly advice further.