Last month was the first month I o'd while breastfeeding. I had 3 days of positive opks but the middle day was strongest. I had lots of ewcm. My luteal phase was far too short. This month I think I may have missed my surge because I didn't have opks. I had a tiny bit of borderline ewcm for a day or maybe 2. Today I got an opk and there was a line but it wasn't near positive. I don't know if the surge is just starting or just past or whether it happened at all. If it did then I think it may have only been for one day. Does the length of the surge effect things like cm and Lp? I was just wondering.