breeding

Question
i have a o.e. bulldog ,shes 16 months old,need to know how long they stay in heat? and if breeding, does it matter how many times  i let her breed with the same dog (only letting her breed with one ) but do i need to let them hook up several times or just a few? and is it better to breed at first of heat or end of heat? thank you very much

Answer
First of all, you don't have a clue what you're doing. I suggest you do some research, gain some knowledge and then, perhaps, you might consider breeding your dog. The fact that you mention you intend to (only let her breed with one) male tells me you have zero experience. You don't know anything! Breeding dogs is work and time and investment and you don't get anything for nothing. You're setting yourself (and your dog) up for disaster. There's nothing that I could tell you here that is going to prepare you.

You need to have more in mind than just producing puppies to sell.