Thinking suicidal thoughts is not uncommon (trust me you're not the only one TS), but its not a normal way of thinking either. There's actually a term for it which is 'suicidal ideation'.

If the urges are getting stronger or you feel you have difficulty coping, then should really follow fellow lowyat's advice to see a doctor/psychologist.. and from there having loving family and friend support really helps. Mentally supports and hope TS will be able to find own ways to cope. If TS needs a listener, my inbox is open