About vaccination? Dose? or second dose?

Sir myself taken covishield vaccine from my friend, a doctor. But he has given me the vaccine at 20.30 hrs on March 15.but the actual while was opened on that day is 10 am and the sample bottle(empty covieshild bottle) was return ed at 4 p.m which is mandatory.what he did is before return the empty bottle ,he transfered the remaining vaccine in a empty bottle and when I met him on the day evening he taken out the saved vaccine and administrated on me.I do not feel any pain or fever on getting it. Does it works is my first question. On april 15 I have checked my anti bodies and result is 2.33 units only. On april 19 I have taken covishield at phc.this time also I don't feel any fever or bady pains. Can I treat this as first dose?or second dose? Pl answer.I am a good practo member.. Thank u