OPK's

I know everyone is different- this is my 2nd cycle TTC #2 and am using the clear blue opk. Decided to start testing a day or two before my fertile window. 
The past three days, went from a O one day, to a flashing😀 the next day to my solid😀 yesterday. So of course we BD'd. Now this am have an O again. Is it possible I didn't ovulate? Aren't solid smileys sposed to last two days? Did I just get that one day window? Any insight welcome and appreciated. Thanks in advance!