Ovulated early?

Have any of you ladies ovuLated earlier than glow tells you? I had an iud in which was removed in November had a period for 11 days in Nov then got my monthly at end of December for 7 days. I am supposed to ovulate tomorrow but I swear last Wednesday I was ovulating, I could tell by the type of CM I was having. As well my stomach has been cramping ever since mild tender breast and today I feel nausea haven’t ate all day. HELP!