Uy, mahal, kung masakit ang singit mo talaga, please go see your doctor agad-agad, ha? Mas better na ma-check kaagad para malaman ang exact cause at ma-treat properly. Hindi ko matutukoy kung ano talaga ang dahilan nang walang proper checkup, pwede itong maraming bagay, at kailangan mo ng professional assessment. One of my mum friends na may similar concern, kinuha niya agad sa OB/GYN, at nalaki ang relief when she found out what it was and got treated. Don't wait pa, bestie, go see your doctor soon!