My female pitbull made it three weeks and 3 days ago I’m not really sure if it was a successful mating but she has been sleeping more her teats are a little swollen in her eating habits have changed she hasn’t really been eating as much she’ll take a few bites and then be done she started leaking some type of clearish discharge (picture shown , sorry it’s up close and personal ) her belly hasnt changed all that much shes till lean just with slightly swollen tears. Is this a sign of pregnancy?