This month was a bust, which is fine, this was our first TTCAL, so i wasnt sure when ovulated, i didnt use opks, i just went with a lets see what happens attitude. Its weird b/c it came 3 days early. My cycle was only 24 days, instead of the usual 27. This is a new month, and im going to use OPKs this month. Not sure how to use them. Any tips? what is a good brand?