My daughter is 15 weeks and for the last week or so, sometimes when she cries, she goes all high pitched and squealy.

I don’t know if that means she’s got tummy ache (even tho she’s never done it before even when I know she’s had tummy ache) or if something else is wrong or if she’s just discovering she can make new sounds?? She does settle after the usual stuff to settle her (she mostly cries when she’s overtired or overstimulated) so I know nothing serious is wrong