Cntd vaginal problems. To disturb it.

Last year in april rashes were outside where hair growth is there and burning sensation wasn't that deep but inside evenly distributed I will send attachment of my proscription too. I don't feel any burning sensation until I m having intercourse coz it's internal this time. it would be great if u can tell me ways in which I can have longer contraseptive without effecting my sexual wellness and my periods.i don't have a baby but we r planning to have after 2 years.i want to use some contraseptive like barrier method or something like that other that harmone ways but it scares me if that would effect on my organs for having a baby.please guide me through this.I don't want to have harmone things coz It disturbs monthly cycles and I have seen women facing problems for periods.i don't want to disturb it.thank u doctor.i will wait for ur reply.