Lavender Oil Exposure. Ugh

I know it's recommended that all essential oils are avoided during the first trimester of pregnancy. Today I wasn't feeling well and spent the afternoon in my guest bedroom (there's a TV in there, hehe). About 4 hours later, I realized I was laying next to a lavender oil infused pillow that my last guest, who was visiting for New Years, left.

As soon as I smelt the pillow and realized that it was lavender, I left. I'm really concerned about the exposure though. I'm 13 weeks today.

Anyone have any insight ): I'm a first time momma.