Abnormality in Pulse Rate. Worry about?

Dear medical professionals, since March 2024, I have experienced anxiety.  Following a psychiatric consultation on May 12, 2025, I was prescribed ZOLAX SR 0.5, MIGRABETA TR-40, PARI CR 25, and CLONOTRIL 0.25 (for emergencies). My symptoms include social anxiety and a fear of venturing out alone, without panic attacks.  In early June 2025, I observed bradycardia (pulse rate below 60 bpm, approximately 50 bpm). A normal ECG was recorded on June 6th, 2025, while unmedicated.  After omitting MIGRABETA-TR 40 on June 10th and 11th, 2025, my pulse rate was normal on the 10th but elevated (92-103 bpm) on the 11th.  My physician advised discontinuation of MIGRABETA-TR 40 on June 21st, 2025, and since June 22nd, 2025, I've again noted an elevated pulse rate (above 90 bpm). Is this increase in pulse rate following cessation of MIGRABETA-TR 40 considered normal? Is there anything to worry about? Thank you.