What is going on?!

My one year old is acting so weird lately and I can’t figure out what is going on.

When she comes back from daycare she gets so happy to be home, but then basically just screams up until it’s her bed time. It’s been like this for the past 1-2 weeks. She asks to be picked up, but then wants to go back down to the floor, then cries and screams again. It’s like nothing makes her happy. Prior to that she used to be the happiest baby...

She also started refusing her dinner, which is weird cause she was doing really well with solids.

I don’t know what’s going on and feel so lost. It’s agonizing not knowing why she’s crying and screaming so much. She wasn’t like that on the weekend, it’s been just during the week. She just “graduated” from infants to the young toddler class, so I wonder if the transition has been hard on her? Anyone experiencing anything like that?