When do you think LH surge started?

Stacey • One boy, one girl, Two in Heaven and another on the way. Endo Warrior, Bicornuate Uterus

So I got this today, clearly positive. Yesterday the line was not as dark as today but just as dark as control. Would my surge of started yesterday or today? I am feeling crampy today which I usually get with ovulation which makes me think my surge started yesterday.

My husband and I BD yesterday afternoon and I am hoping to again today before he goes to work. Tomorrow I go back to work and he is on nights so our only chance would be today. Anyone know if that's enough? I am CD 11