Hi
I'm on CD20 too and my cycles vary between 28 and 33 days, ooh we're so close, how exciting.
I ovulated a little later than you though but I have cramps now and again and a lot of creamy CM and I mean knicker wetting

. But to be honest I'm like this every month so I try not to get worked up, just in case.
Wed 27th Sept is day 33 so I'll probably test around then or maybe the day before.
Fingers crossed for you [-o<
Charm X