TMI warning question on ov,cm,bf

I was wondering has any one any ideas what is going wrong with my body i have been charting science March and was actively ttc but didn't fall pregnant very unusual for me as its a long standing joke that my DH just has to look at me and im pregnant i always felt very blessed that we had no trouble.
so ive been putting it down to my body getting in to the swing of things as my AF only came back for the first time in february as i was breast feeding.
Any way my cycles have been great the last 3 months we had stopped TTC as we are moving (That is another story altogether ) but this month i noticed i had EWCM on day 15 which was fine we had been a little naughty but going form the last couple of months with BF i don't think im OV so i was not worried but Saturday night we weren't careful as we both taught safe time Tuesday and yesterday i noticed ewcm again diffidently not left over semen i mean how long does that last inside any way am i ov again or is my body trying to should i get my hopes up or try and forget about it.
any body any ideas Im still bF my son he is 15 months now i am on day cd23
sorry so long
Naimh