I am an 18 year old male and for the past 2 weeks I have felt a sort of tight feeling every now and again in my lower abdomen, just above the groin. Yesterday my day started normally but after having something to eat I began to have the feeling that I needed to pee every 15-30 Minutes. This was also after having a couple of glasses of soda. Today I woke up feeling very nauseous with a headache. I also have had a few hot flushes. I also have diarrhoea I'm hoping to go to the doctor tomorrow, but I was hoping someone knew what it could be and if this is serious or not, as searching for these symptoms it looks like I either have a urinary tract infection, or possible prostate cancer. I'm probably jumping to conclusions, but it is starting to really worry me. Thank you.
Just to add as I forgot, I also have lower back pain, which I thought that was because I had picked something heavy up, and recently it has started to burn when I urinate.