Feeling faint, dizzy, and nauseous

Allyssa • Pregnant #2 due June 23 2021 #1 👶🏼💙 07/01/20 mc 17/03/19

For the past two days I’ve had to call in sick

to work as I’ve been getting spells of feeling like I will almost faint, being off balance, confused, dizzy and nauseous. I start sweating and then the spell lasts about 30 mins and I’m okay for a few hours then it happens again. I’m 33+2 and I just had my doctors appointment before this started happening. Any advice would be appreciated?