if you vigorously stroked on your finger seven times a day i suspect you would get a sore finger. the penis is really no different. my only suggestion for you is to give it a break. throttle back on your masturbation frequency and allow your injured penis a chance to recover.
i've been masterbating very frequently lately like 4 to 7 times a day and now i've got this sharp pain within my penis? . its actually a burning pain within my penis after i pee but when ive over- masterbated.