Ovulation

Good morning ladies I need your help is it normal to keep getting POSITIVE LH SURGE opk for 8 days now like the lines aren't getting darker on the test line side could I be pregnant if my fertile window started on the 24th of feb? Can ovulation pick up pregnancy? Am I too early to test I felt the cramps on my left side days ago I'm guessing it was my egg releasing but I'm not sure AF DUE IN 10 DAY PLEASE HELP