Keto during pregnacy

Has anyone sought medical advice as to whether keto is safe during pregnancy? I've read conflicting information.

I'm overweight and the only thing that seemed to work for me before pregnancy was keto...mainly because I found it easy to follow. I don't intend to try and lose weight, just limit weight gain - I'm only supposed to gain between 5kg - 9kg during pregnancy.

I stopped keto as soon as I found out I was pregnant but considering whether or not to go back to it...but only if safe for my baby.

Advice would be appreciated 😊

p.s. I will talk to my OBGYN before starting anything