should i be more worried?

hi everyone, im a little worried about prostate cancer because of some symptoms ive been having since Christmas.

im 49, if that makes a difference.  the symptoms ive had are ive been getting a pain in my groin which goes down my leg a little, but since the start has spread to the outside of my hip, round the side, the bottom of my buttock on the left hand side and I get a funny sensation on my right buttock at the outside of my body, I get a little burning sensation going across my right hand side of my groin/pelvic area.  I sometimes feel my flow is a little slow as well at times but not all the time.  Just lately ive been feeling really tired as well where I need to sleep, mostly in the afternoon.  I also feel that when I get up im still tired and don't feel rested.

I have spoken to the GP about this previously and they wrote the pain on as something but nothing.  I kept pestering one GP and he did a DRE and said my prostate seemed normal. however my leg/groin pain is getting worse and at the time I got a check wasn't feeling tired the way I do now.

I guess im a little worried because I lost a friend to prostate cancer last month and he said his main symptom was tiredness, I also have another friend who has been diagnosed in the last few months who suffered from leg pain and hes been told its in his bones.  my mind has put 2 and 2 together and came up with 4.  I approached another doc in the surgery and I have an appoint with him this Friday to speak about it because im concerned but for the last day or so ive been quite worried about it because I think it might be in my bones and I cant shake this tiredness off.

thanks for listening, sorry for the longish post.