TTC while BF, temps are erractic and not sure what to think

[twinkie2]

So we are ttc#3. I've started charting again to help confirm O but my temps are all over the place. I had a +OPK on CD 13 and 14, negative since then, but I've had EWCM and HSO cervix since CD 14. FF is putting O on CD 13, countdowntopregnancy.com says it's CD14 but obviously CM and CP both suggest it hasn't even happened yet. My temps are only slightly raised and I had a huge dip this morning. I'm really unsure what to think here. I know charting with BF is hard when baby still wakes 2x a night so I just do the best I can and temp when I know I've had 3 hours of sleep, it's really the best I can do at this point. My cycle just returned so I have no clue on when things should happen or if bf will affect it like it did when we ttc#2.