Thanks for the consult..
This may be due to urethritis
or any sexually transmitted disease
1. I seen your query. I am happy to help you. You already mentioned that you have red bumps at the site of urethral opening
2. This red bumps may be due to urethritis which is commonly due to gonococcus or any sexually transmitted diseases like herpes
3. Kindly do urine examination for bacteria, VDRL
test for syphilis, blood examination and culture for gonococcus and herpes genitalis
Hope this onformation helps