Rhubarb?

Strange question. I'm almost 13 weeks pregnant and I've been craving rhubarb for like a week. My mom just took the food sanitation class and they said that rhubarb can be poisonous to pregnant women, so I looked it up and all I could find was that the leaves can be poisonous, I'm just wondering if any other pregnant women ate rhubarb during their pregnancy? My mom has me terrified to eat it, but the craving is real.