Hi need a bit of help with tracking ovulation. So from the beginning I had the mirena coil taken out on the 5th october, my periods completely stopped whilst having it in. I have had the usual spotting etc. I bought some ovulation tests to try and help figure out where I would be, I took one 2 days ago and it was negative (there was a line in C window but not dark enough for a positive) I have retaken one today and there is no line. So my question is have I already ovulated and if so is it possible to know when if I have had no periods prior? I hope this make sense. And thanks for any help 
xx