propylene glycol and pregnancy?

Katie • 20 yrs old ☀️ Leonardo 10.16.18 👶🏻💙

I am 9 weeks pregnant. A few days ago I went to the eye doctor and was told to use some eye drops for my dry eyes. I didn’t mention being pregnant but I’ve noticed that the eye drops are made of propylene glycol. Does anyone know if this is safe during pregnancy? The bottle does not say anything other than the name and What it’s made of. should I stop using these? Thank you