I'm currently 32 weeks and whilst I know I should be expecting more discharge, can someone tell me what type/consistency the discharge should be?

Sorry if TMI..whilst I've got some whitish discharge, i've also got very liquidity and quite transparent discharge. I can't use liners on a daily basis(irritation problems), and the liquid soaks thru my undies. I'm wondering if that's normal...or if I'm leaking amniotic fluid.

Also, I just saw my ob last thursday, and whilst I didn't tell her about my concern, she did an ultrasound and didn't say anything. Would an ultrasound pick up an amniotic fluid leak?

Thanks for your replies!