My Name Is Ciara I Had Sex With My Child

My name is Ciara I had sex with my child father beginning of September.. A few weeks later my left arm has been itching badly none stay have 3 little bitty bumps different spots on arm I use Vasaline grease .. Showered with just warm water I did everything .. Now I have 3 little bitty bumps on my knee that itches bad ... In my genital area been itching with lol bumps on there but that has happen to me in the pass like years ago this arm itching is very new