purple spots on penis head help!!!

First of all i am in the desert and have been away from my wife for about 6 months so there is no way i could have gotten this from sex. second i havent cheated on my wife so any sexual contact with someone else is totally out of the picture. about a month ago while masturbating i noticed this purple bump. the bump was right about the crown of the penis. after masturbating i examined my penis and couldnt find anything. then i got curious and examined my penis the next day and found the purple spot but it wasnt a bump it just seemed like a bruise or something under the skin. the only way i found it was becasue i knew what i was looking for otherwise you cant tell anything is there. i went to the doctor and he examined my penis but couldnt find anything that was related to an std. so now a month later, about 4 more spots have appeared. the thing is i can only find them easily when erect but when im not there not easy to find unless you know what your looking for. also while im erect it seems like only two of those spots actually bump out. they just look like there under the skin of the penis head when im not erect. also when i squeeze my penis while erect i can notice them but im not doing it hard im not gonna damage my penis. also i have not masturbated since i found the first one and there not gone. so what i would like to know is what this problem is? and if there is a cream i can use? will they go away? please help.

[SadWife1968]

My husbad o God it's so hard to talk about but I have to let you know.  It started the same way when erected he had a purple spot then soon after blood started coming out when cumming, he had CANCER TO PENNIS they had to take the head of pennis off they put a cathater In him that came straight threw his blatter. It has been five years they take about an inch and half a year off it  has finally at the end stage his left nut has rotted off his right nut has ichty blisters all over it from chemotherapy they say it will soon go I hope it does every morning at five a.m. He's in the bathroom scratching at six Im iceing please take my advise and see Onclogist Immediately!!!!  

[Bhupinder Kaur, MD]

Hello,
From the symptoms that the purple spots are under the skin, it can be a broken blood vessel, hematoma or a blood spot due to inflammation of the blood vessels, some nutritional deficiencies, a bleeding or clotting disorder, or certain medications.

I suggest you to wait out for a few days. If they increase in number, then please consult a dermatologist immediately.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.