Pink eye? Scratched herself?

My baby’s eye is real red and watery. The eyelid is also red and seems a little puffy. She isn’t opening her eye the entire way all the time is is more irritable than normal. It goes in phases though; She’s totally fine right now and the eye looks normal but 10 minutes ago it was red and she was crying. Been this cycle since last night.

Anybody know what this is? Part of me thinks she scratched herself because she does grab at her face, but I also worry about allergies and infections.

She’s had a runny nose for a couple days but I was sick last week and I think she got a bit of that.