Hey guys, first month ttc and I used the cb dual hormone opk. Had sex prior and in days of peak fertility. Today I'm 8dpo and got a bfn but after I was sick and hav even getting cramps also brown ish CM. My temp has been 36.3 the last few days but today was 36.1. Is AF coming or am I super early in a pregnancy? Felt a little sad after seeing bfn (using didigtal CB weeks indicator hpt) today though. Any suggestions guys?