Ovulation 3 days after period ended

So I been having trouble Getting pregnant and I been taking opk's and could never really pin point the ovulation day cause they are so confusing ( never getting a dark line) so yesterday I bought the clear blue digital one ( the smile face one ) and I took a test last night and nothing was kinda expecting that but this morning I took the test and got a smiley face mean high fertility!! But I just ended my period 3 days ago .. Abd I started my period the 1 st of this month so 9 days .. Is this normal ? I'm so lost lol help ! Lol