baby fell from bed, got fever

Mom, my 5-month-old just fell from the bed:( After I picked him up and cuddled him, he calmed down and went straight to sleep, no injuries or anything, but I'm freaking out. Not long after that, he got a bit of a fever. I want to take him to the doctor, but my mom says it's unnecessary, he's just shocked from the fall. It's been days already but I'm still worried... he's a bit fussier than usual but still eats. Has anyone else been through this? Is he gonna be okay? Please help me out and don't judge or scare me with your replies. Thank you thank you thank you