I am having severe pain during urination, followed...

Possible causes of your medical condition ?
1. urinary tract infection
2. sexual transmittied disease
3. kidney stones  and urinary tract stones and inflammations
4. abnormal tissues growth
5. prostate disease such as BPH 

Treatment pain and blood in urine  :
1. consult a urology doctor to do the needed medical examnation and determine the treatment pathway
2. have a healthy life style including : healthy diet , exercise , regular healthy sleep pattern
3. drink plenty of water ( at least 3 liters daily)
4. avoid unsafe sexual intercourse 
5. if you have uretheral infections , it will be treated as UTI by antibiotics ( orally ) such as Fosfomycin , Cephalexin
6. if you have std infection such as chlamydia , treatment would be :  Azithromycin or Doxycycline
7. for BPH  , doctor will prescribe alpha blockers such as : Doxazosin  , other options including surgical treatment 
8. in case of kidney stones , doctors will do more advanced tests to check out whether stone could goes down by it self 8. or need surgical need to relieve it ( kidney stones if smaller than 0.7 cm usually passes by it self )
9. in case of chronic diseases , you will need  more advanced examnations .
Needed medical examnations :
1. physical exmantion by doctor 
2. urine analysis 
3. urine culture
4. kindey imaging test ( ultrasound )
5. kidney imaging test ( CT )