Could My Inability To Sleep And ECG Showing Sinus Rhythm With Leftward Axis Indicate A Heart Problem?

Good afternoon doctor, last two weeks i couldn t sleep , so i check up for one sidhdha doctor, he check in oxy pulsemeter& told that heart beat is changed, so today morning i take Ecg, the report for Sinus Rhythm leftward Axis unconfirmed report! Sir, any problem? Why i couldn t sleep?