Hindi ka lang, marami akong kilalang pregnant friends na naka-experience nito around third trimester kaya totoo talaga, kahit wala mabahong discharge, ang itching down there ay common dahil sa increased blood flow at hormonal changes, plus ang weight at pressure from the baby. Pero since may kakaibang sensation ka talaga at gusto mo mapakita lang safe, I'd suggest mag-check lang sa OB mo next appointment para ma-rule out any infection at peace of mind mo, mas better safe than sorry, lalo na sa third trimester!
jess