how do i tell if my bulldog is pregnant

Question
how can i tell if my bulldog is pregnant i have male and female i thought i watched them when she was in heat but the last 2 weeks i have noticed her nipple have gotten allot bigger and are saging.what are some signs of pregnant english bulldogs,thank you  

Answer
This is very possibly a false pregnancy. I would be amazed it your male bred your female on his own without human intervention.

When females experience a false pregnancy, they will often fill up with milk and have false labor. It can be very hard on them. If you want to know for sure if there's puppies or not, take her in to your vet for an xray when you think she's about 6-7 weeks along. That will tell you definitively one way or the other.