My SPO2 is 84% without O2. On O2 at 5Lpm it's at a max 91%. Could this possibly be keeping me from ovulating?? I'm CD 23 and still no thermal shift, +OPK, or anything. I normally ovulate (tracked with temping, OPK's and ferning) around CD16. Any help with this would totally appreciated. I can't find anything on this. Thanks so much!!