Baby hit head 💔

My 4 month old was sitting in a bumbo seat on the table ( which is the stupidest thing on my part) she bucked back and threw herself backwards on to the hardwood floor. She was screaming and I ran over to get her she had a huge knot on back of her head 😞😞 my husband and I rushed her to the emergency room without hesitation. She was screaming the whole way there and when I was checking her in. The doctors took her back ASAP and checked her out then recommended a CT scan. At this point she was still crying, after CT scan she napped and drank a bottle then napped again. CT scan came back normal and was cleared to leave after 2 hour observation. She was smiling and okay at this point. Now it’s the next day and I can tell she is still not normal, and taking long naps. Then I discovered some new swelling on opposite side of head and a small soft place. I called dr they said to have her come in tomorrow that she will be fine not to worry. Iam so worried sick and watching her even when she naps. I have not slept all night. Has anyone had any experience like this???? Is my baby ok???? Anyone notice soft spots after a fall??? And what is it???? Please I know this post is long but I need someone to tell me their experience please!!!!!!!