Yesterday, I was sitting down and suddenly, my head dropped, my body swayed, I felt tingling in my hands, felt a bit weak afterwards, took a few hours to feel normal again, like some advice
That must have been scary for you! It could be heart related- but it could be a lot of other things. I wouldn't ignore it either way, and I'd recommend you go see the doctor to ensure that the condition that caused this to happen is treated and monitored.