Not it won't cause any problems unless you have trouble stopping, or it interferes with your normal life, or if you'd rather masturbate than have sex with your wife. It's perfectly healthy and natural to masturbate. At the amount you are doing it, I wouldn't worry. It may actually be beneficial, not only as a stress-reliever, but also as training for the real thing when it happens.

I am a married man and have been masturbating frequently.I also have sex with my wife regularly.It has neither done any harm to my health, nor to the happiness of our sexual life.