BBT going down

w • Baby #1 - born 08.28.17 Baby #2 born 03.24.21

BBT is going down. Does this mean I’m out for the cycle?

Period is due in 3 days.

I took a pregnancy test last night and it was a hard negative.

But I had 4 or 5 sharp pains in my right lower abdomen yesterday evening , not sure if that was implantation or what