Toddler hit head and seems like different pupil sizes?

1M, autism, hypotonia

My son was running in the house and fell on the hardwood and hit his head. There was an immediate bump protruding and we iced it for awhile, he cried but was able to calm him down. He has a pretty high pain tolerance so I knew it hurt when he screamed. No other symptoms like vomiting, losing consciousness, acting strange, etc.

We gave him a bath an hour or so later and he slipped in the tub and hit the OTHER side of his head resulting in another goose egg. He cried, we soothed, and no other symptoms occurred. My husband took a picture of his head as he was putting on pajamas and I noticed that his pupils seemed to be slightly different sizes? My husband thinks it’s from the light but I have very bad OCD and I cannot stop spiraling thinking it might be a concussion. Does it look different or am I just seeing things? Image in comments! Thank you!