Unless *you* feel like this frequency is a problem for you -- like it's getting in the way of other things you want to do or focus on in your life, or your genitals are feeling sore, for example -- then nope, there's no cause for concern here.
How often people masturbate is really all over the map, from people who do it once or twice a day to people who do it once or twice every few years. You may also find that at some times during your life you'll do it less, other times more. But no frequency is a problem unless it's a problem for that person. Make sense?