Headaches and neck/shoulder stifness

Hello,

I’ve been practicing Bikram Yoga for a couple of months now and I do love it. I have an admin job and it helps so much with back and hip stiffness however I am noticing a few hours after a class I get stiffness/soreness in my neck, mainly the base of the neck which causes headaches up my neck and around my head and temples like a tension headache. I am thinking it may be from backward bend poses when I have my neck back as far as it can go as the instructor says (which I do although it feels uncomfortable). I also feel quite stiff in the neck and shoulders when we do the first breathing exercises. I have always had issues with my neck and shoulders possibly do to my admin work and I struggle to do certain weights like arm flys as it aggravates my traps too much. I get a remedial massage once a month and as much as possible have an ergonomic workplace which usually keeps me in check but since I started the Bikram I keep getting these headaches/neck pain. I had a massage the other day and she seems to think it’s postural issues… I am planning on going to Bikram tonight and will bring this up with the instructor but if you have any tips on what I may be doing wrong that would be great.

Thanks,

Ange