Bright yellow urine very bright like neon on toilet paper an abit uncomfortable pain in vagina especially when having intercourse is this worrysome?

Bright yellow urine. Is usually a reflection of what you are ingesting. Review supplements and other things in your diet and through a process of elimination, see if you can figure it out. If you cannot, plan to see a local physician who can evaluate your urine more precisely. As for vaginal pain after intercourse, see your gynecologist if this is a persisting problem.