Anyone else almost faint??

El

Last night we went out for dinner with my in laws and all of a sudden sitting there my ears got sort of plugged I got super hot like a hot flash started feeling woozy and had to put my head between my legs! Lasted like 5 mins, I didn’t actually pass out but then was alright. Wondering if it was bc I got too hot and was pretty tired yesterday, I had been drinking lots of water and I know I’m not anemic, as soon as I got home I checked my blood pressure and it was 117/70? Has this happened to anyone else? Just a fun part of being pregnant and 34 weeks?