i got this new chair for my room yesterday. i sit it on it all day playing bass, keyboard, using the computer etc. but ever since i got it last night am getting a certain light backache in my lower back

am wondering if its back to seat angle or its shape is not alright.
the thing is the chair's back support goes back if you lean back or push against it but its too tight and i have to push too hard to be really comfortable imo
its still new so i think the shop might take it back and let me exchange it for another one. maybe not anywho i think i need another chair or get used to this. will i get used to this?
have a look see if you can make out if the back is bad or something. i dont want to develop any issues at 19 due to a silly chair!
