Pre seed user

Mrs. • Finally have our babies. R.I.P Kimara Jeffers. Welcome 2 handsome boys Allan and Kayden Jeffers. 👧🏾👼🏾👶🏾👶🏾👦🏾
When u insert pre seed you. Do you do it before u BD or after BD???? Sometime my boyfriend caught me off guard and he don't want to wait 15-20 mins. He say he will lose interest. So we BD anyway. I lay in bed bout 10 mins. Got up and put pre seed in me and back in bed til I go to work at 430pm. (Right now it's 1240pm). 
Hmmmm. I'm wondering if someone in the same boat as me.