help with preseed PLEASE!

for those who have conceived while using preseed, how do you use it? what exactly did you do with it? how long did you wait after using it to bd? i just bought it for the first time and i have honestly never used any type of lube before so im %100 clueless right now 😌 (dont worry about being all tmi, it takes a lot to gross me out and im legit asking for any advice y'all have!) thanks!