Does The Female Dog Still Bleed After She Has Got Pregnant?

If you mean does the heat finish the regular course, yes. They can breed many times during a heat cycle and you can have many sire's as well. Actual breeders do not let their dog's mate indiscriminately neither with one dog or many. Everything is supervised and monitored for the best results. If you mean the heat is over and you think your dog is pregnant and now spotting, NO. You will need to see your vet as it indicates a problem with your girl and most likely miscarriage (also caused by problems like illness or STD or infection). Bleeding for an extended period of time or excessively after breeding can also mean that something went wrong and your dog is now hemorrhaging (bleeding out) or a bleeding disorder. If all went normally you see your vet about 20 to 30 days in to confirm and start monitoring the pregnancy.

Bleeding during canine pregnancy is not good sign. It can be due to miscarriage. Spontaneous abortion in dogs can be due to infectious diseases, Pyometra, cancer, Trauma, Uterine defects, fetal abnormalities, hormonal imbalance, side effects of some medicines, and dystocia.

Signs of miscarriage in dogs are absence of delivery on times, decrease in abdominal size, loss of appetite, vomiting, diarrhea, depression, fever, dehydration and vaginal discharge which can be bloody or containing pus.
So, whenever your dog has any discharge during pregnancy other than at the time of labor, is not good sign. You should contact vet immediately.