Constantly needing attention

Claire
I know this may sound odd but is anybody else's baby going through this at the moment. My MIL was playing with my girl the other day and she got us to have a drink and Isabelle screamed so much till she sat back down. She's been like it with me today I have to be constantly with her playing or she's crying. I can't get up to get her or myself anything without her causing a fuss. She never used to be like this. 
Anybody else's baby started wanting your constant attention? Xx