2nd Trimester Cramping??

I am 15 weeks and 3 days today and for about the past week, I've noticed I cramp a lot more than usual. They're never painful, just mildly uncomfortable, and they come a few times almost every day, as opposed to maybe one mild cramping episode every week or two in my first trimester. Has anyone else noticed an increase into their second trimester?? Like I said, it isn't severe cramping, I just feel it more than I did before, and I wanted to see if this was normal.