Why does this keep happening?

Everytime I get up I feel all dizzy and feel like im going to fall down or faint, could this be something serious? or should I not worry about it?

No it's just a/ the heat b/ tiredness and also c/ when you get up the blood from your head is disturbed and starts rushing down your body.
I get it, its wierd and I just noticed it

Happens to me a lot and my blood pressure is completely normal.

Its just that the brain hasn't quite got enough oxygen for the moment because you get up suddenly but your heart was beating as if you were still resting but you probably know that it soon catches up and your dizziness clears away.

happens to me a lot itll go away sooner or l8er!

Maybe youre not sleeping/eating well..
Tiredness..
Maybe it's really hot in your country those days and you're still not used to it after a loong long winter..
But don't worry, it will go away just relax, don't think of problems, and don't drink really cold drinks..

Happens to me a lot.
I don't think it's anything serious.

I get it a lot I think its ok