After a very anxious five weeks wait I finally got to see a Urologist. My PSA was 22.5 five weeks ago. He performed a DRE and examinined my medical history. He said that there were no abnormalities with the prostrate and that the spike most likely had been caused by a UTI. My previous PSA was 0.78 in January 2018.
They are going to check PSA again one week after I finish my current antibiotic.
I would like to thank everyone for their support following my previous post and hope this may be of some help to those in a similar situation.