Is She Behind?

Just a silly question. I'm a first time mom and I was wondering if my baby should be holding and playing with toys by now or not? She will hold it for a few seconds if you put it in her hand but she drops it and has no interest. Even when we use the activity gym she has little interest in the dangling toys. She doesn't really even bat at them. Also she hasn't laughed yet. Is this normal and when do they start to laugh and play with things??

Sorry for the silly questions. 😊

She's 13weeks