Pregnancy issue. Are please please help.

I am a 18 year old female. I recently had protected sex that too during my periods with my long time boyfriend. After that we tested and it was negative. Also my periods continued in a normal flow after that day for 3 days . After Nine days(periods were over)  i had a regular full body blood test and it showed i was not pregnant and all things were fine but my prolactin levels were quite high (approx 65) i had pregnancy tests again and all showed negative but now we were very tensed due to the fact that my prolactin levels were high. People said that this could be because of poor diet which i have or pregnancy. We're very scared. Also we took pregnancy tests but they are only true after a month and the blood tests were also done after nine days so maybe they were not accurate. I don't understand anything. PLEASE RESPECTED DOCTORS HELP US. YOU KNOW THE SOCIETY WILL KILL US IF WE ARE PLEASE PLEASE HELP.