Hello Sir, I have phobia about HIV. Last week I went to Massage center for a normal massage but the lady at the massage center after half massage asked something like if I need massage private parts . I denied that and continue with foot Massage and came back.
After couple of days a though came in my mind and which is bothering me a lot. I will like to request your help for the risk evaluation of it. What  if the Semen from previous person was fallen and I sleeping naked facing my pennis to bed , the semen might enter my penis. I can confrim that bedsheet was new and it has a very thin double layered cloth on top of bedsheet. Both bedsheet and double thin layered cloth were new and changed but I am thining like what if the semen from previous person might have dripped down on third layer of thick bedsheet which was not changed and came to new sheets and entered my pennis.  Also I checked her hands before the message it were clean. But thinking that semen might have entered through my pennis mucus membrane keepin me anxious

Welcome back -- but as I'm sure you know in your heart, this is only your HIV phobia speaking. Replying first to the title you chose for your question, nobody ever gets HIV from having a massage without sex. You were at zero risk or HIV, regardless of semen from previous clients. As discussed in your previous questions, which were about fingering (also no risk), you will never get HIV until and unless you have unprotected penile penetration with an infected partner. You do not need testing and should not be worrying. All is well.---

Appreciate your response sir! I am asking this question just to satisfy my mind and not to question or doubt what you said. I came back here as I have trust in your expertise. 
Say in worst case my pennis mucus membrane contacted the semen from previous person say within 10 minutes of his ejaculation. Still the risk is zero?
This incident happened in the evening but on that day at home in morning and afternoon I masturbated, so 2 masturbations on that day, did that create any additional risk for HIV transmission. I am sure that I do not have any cuts or scratches on my pennis externally

"Say in worst case my pennis mucus membrane contacted the semen from previous person say within 10 minutes of his ejaculation. Still the risk is zero?" Nobody can say it's truly zero risk, but in the 40-50 years of the known world wide HIV/AIDS epidemic, nobody has been known to be infected in this way. You will not be the first. Masturbating a few hours later did not raise any risk at all.---

Thank you again sir! Sorry I was not clear in my question I mean to say I masturbated twice at home in day, I went to massage later in the evening is that increases any risk? I am sure that I do not have any scratches or cuts externally.

I mean to say I masturbated twice on that day in the morning and later in the evening I went to massage center. Is that increases any risk of catching up virus through pennis mucus membrane?

I am circumcised