3m.3w old fell off the bed. Please help

Idk what to do it’s been 22 hours now since the fall off the bed onto the hard floor I’ve been watching him all day and night but I didn’t notice until about 14 hrs after he fell that he has a bruised bump on his head kinda above his right temple area his hair is so thick an long it’s hard to see. All day he has seemed like his normal self playing happy no weakness on either side. But the more I google the more paranoid and anxious I get. I’ve been watching his HR & O2 all night on his owlet sock and I keep checking his soft spot for any bulging but I’ve noticed him touching his head a few times on the bump then just little bit ago kinda touching both sides while sleeping but it wasn’t the just closed hands up by head he keeps opening hands and touching. He still wakes easily startling every time I shine a light on him and his pupils are still both the same size. He did puke a couple times today after his bottle but he also has sensory & reflux issues and doesn’t easily burp. Just when It comes to him I am so anal and worry about every little thing he’s had a traumatic birth and spend first 6weeks in the NICU with Drs and nurses who should have chose a different field so I really hate to take him back there unless his brain or life is in jeopardy but at the same time I am feeling like such crap because he managed to wiggle his way off the bed and I didn’t even notice the bump till hours later after I examined him and his head several time 😭😭