Please help reassure me.
DS 20 months fell off a chair earlier, he hit his forehead hard on the floor. I feel awful. He cried for about a minute and then was eager to run off & continue playing, so I wasn't too worried, but a huge bump & bruise has come up!
Since, he's played normally, ate his dinner & has just gone to bed. I've looked at NHS advice and it seems I've got nothing to worry about but I can't help feel concerned. 
What do you MNers think? He is my first, so I'm fairly inexperienced with toddler bumps & bruises!