Ugh. So I literally feel like the worst mom in the world right now.. Isabelle has mastered pulling…

Ugh. So I literally feel like the worst mom in the world right now.. Isabelle has mastered pulling herself to stand and she does it on absolutely anything & everything she can. Today, she was holding herself up on a rocking chair at the edge of the living room/beginning of the kitchen, so the floor goes from carpet to hard wood. I kept pulling her down but of course, the second I turned around she lost her balance and fell over and hit her head where the carpet meets the wood floor. She started screaming & crying, of course, but calmed down within a minute or so once I picked her up. Afterwards she waa fine, happy, smiling.. be her normal self. But there's a reddish-blue mark (maybe bruising) and a little bump. If she's acting fine, do I not have to worry?? Or are there symptoms I should look out for?? She's napping now and I gave her a half dose of baby tylenol for the pain (she's also cutting her 3rd tooth)

Just someone, please give me some insight, advice, or whatever because I feel so awful :/

Ps. Please no negative comments, I already feel horrible enough on my own, thank you x

I added some pics: the little metal ledge where carpet meets wood, the bump right after it happened, the bump after 10 mins of putting a cool rag on it (thats the one that is darker red) and also her smiling watching her show seeming to not notice anything :p