Peanut allergy?

Angie • Baby#1 due in June
My dd is 22 weeks and ebf. A few weeks ago I made granola bars with peanut butter. I was eating these daily. I noticed that my daughters eczema got worse. I stopped eating peanut butter and it's getting better. Could she have a peanut allergy? No tummy pain or weird poop. Maybe the eczema is just a coincidence?