i haven't had a proper 'cycle' as such since having bub. I think 4 'periods' from memory.
I have done 9 tests, all have the line. I got my SIL to do one, no line. I dipped one in water, no line, did that to make sure they weren't evap lines.
All 20 of the tests say they're pregnancy tests not ovulation tests.
And SEVERAL things I have read have all said that because breast feeding can cause your ovulation to not be regular, your chances of falling pregnant during, or immediately after your period are greatly increased.