How early or late can ovulation occur? Last time I got pregnant I wasn’t necessarily in the “fertile window” when we had intercourse but around that time I had lots of CM. This time I noticed my sex drive increased like right after my period- which also seems to be a sign for me that ovulation is near. Now the calendar says it’s my fertile window and I don’t feel that sex drive or a lot of CM? Maybe I haven’t ovulated yet or already did right after my period?