Ovulating???

miranda
Just took a opk and as you can see it looks positive to me what do you guys think. Ive got tummy cramps a few hours ago too. The first is from this morning negative. The next from 14:55pm this afternoon getting darker and the end one from just now. When should i bd?? We had intercourse yesterday morning and on cd4 four days ago. Oh and im on cd8 today