I was out of town and "trying to relax" on CD 18-19 so I didn't test (Glow had me ovulating later this week). Judging by my CM I'd say I ovulated somewhere between CD 21 and 22.. My question is, when should I expect to see those levels go back down? I read that you can stop testing after ovulation, but this is my first time using OPKs and I wanted to test the whole cycle.