The risk here is very low, and certainly not worth thinking of suicide over.
Condoms offer significant protection for syphilis, HPV and herpes, even though it's not total protection.
Genital warts/HPV would take at least a month to appear, often longer, so the bumps you see aren't warts from this encounter. The scrotum is a kind of bumpy place. If you're concerned about what you see, ask your doctor to take a look, and find out if what you're seeing is normal.
Herpes is blisters, and syphilis is a round, painless sore.
There is no test for men for HPV, and you can test for syphilis at 6 weeks. There is a blood test for herpes, but many countries don't offer it outside the US.
Your remarks about suicide are concerning. Please talk to your doctor and/or a counselor.