Help please


Hi ladies . Help please I got it all wrong . I want to know something if my last period CD was 43 when will I ovulate .

I had put 30 day cycle in <a href="">glow app</a> and it showed my ovulation was on 14 March .

But I did first response and it was negative . What does it mean ?! On other app I just put CD 43 and I’m still to ovulate .