Odd cycle

Laura
Hey!! So I  struggling to predict ovulation. The reason is  because I have an odd cycle.
​For example last month I bled for 7 days straight (usually around five days) and each day the bleed was like it was the last day. Hardly anything. Usually I am a very heavy bleeder. Glow predicted mon 8th for ovulation but on the ov kits the line only went ALMOSTas dark as the control line across Friday sat and sun then back to clear again. Had inoculated then and not known?
​Anyway I am a lesbian so I can't just get to it willy nilly (no pun Intended ?) I have to plan. We are having our first attet next month and I am worried  I will predict wrong and miss!! ?