why do i feel so weird

It's my first day taking my supply. I have taken around 8mg total spread out from cutting a 8mg film for the last 6 hours. The first dose hit me and i felt absolutely so weird. I was panicking thinking some perceptive withdrawal attack happened. But it didn't.
I just got all super jittery and started having the sweats then i got tired and knocked out

I dont feel much relief from withdrawl as much as Im just in this very weird dazed state where I'll start examining things on my phone for a prolonged period of time. Why do i feel so strange and lightheaded and in a dizzy spell