Baby hitting head

My 8 month old was sitting up & flopped herself backwards & hit her head on a gymnastic mat 😭😭😭 shes always had this on off slight redness on back of her head & is having it now, I'm just so worried 😭😭😭 she seemed normal & was babbling even more than usual bc she was tired I think she hadn't had a nap in 5 hrs...do you think I should call the drs? 😭