Did my hair transplant doctor miss a spot?

[zeoxeo]

I just received a hair transplant 15 days ago. I was classified as a Norwood 2 so 2003 hairs were transplanted and my question is did my doctor or the technicians not add enough follicles to the left area of my receding hairline or is this the result of loss of grafts from natural shedding after a hair transplant. If so, why is there a difference in density between the right and left sides? The doctor has done 20 hair transplant surgeries and two of the technicians had over 20 years of experience while the third one was being trained. Thank you in advance!