Do I have a problem if I just leak a little?

From Terry, a Pelvic Health Physio:
Urine leaking when you jump is called stress incontinence https://www.goagainsttheflow.org.au/below-the-belt/#typesofproblems. We all have little muscles at the bottom of the bladder called sphincters that close off to stop urine leaking out. Jumping puts a lot of pressure on these little muscles and they need the help of the nearby muscles called the pelvic floor muscles to stop the urine leaking out. Your pelvic floor muscles may be a little too weak for the pressure exerted by a big jump or they may be a bit uncoordinated https://www.goagainsttheflow.org.au/mi_rightmuscles/core-just-tummy-muscles-5/.
Practicing pelvic floor muscle exercises in different positions and during different activities can help improve the strength and coordination of these important pee control muscles. If it keeps happening or gets worse, then you can get help from a pelvic floor physiotherapist to train the pelvic floor muscles to do their job properly. Wearing a pad while you’re retraining the pelvic floor muscles to cope with your body’s athletic demands is a good idea, but don’t ignore the problem – you don’t want a little leak to turn into a big leak.