Thanks for posting you query to health care magic.
STD after unprotected sex can be transferred if either of the partner is infected with STD.
First I want to eleviate your worry about
HIV as in 10 days of time HIV do not manifest with any clinical symptom as symptom of HIV is not due to virus itself but due to secondary infection occur because of decrease immmune responce of body and it take long time to appear.
second other STD may manifest within 10 day period of time so you need to examined and investigated for that .as there are a number of microorganism causing STD so it is not possible to investigated for all of them .
wet sensation on tip of the penis may be due to some infection so need to consult to your physician for local examination of genitalia and further I would like to suggest you to send your
penile discharge if any to microbiology lab for Gram staining which will guide us about infection .
You dont ned to worry as even if it is a STD it would be treatable as it is a acute infection but only thing is to consult your physician for local examination.
Hope you would be satisfied with my answer . Feel free to communicate if any query .
regards,
Dr.Manish Purohit
Infectious disease specialist