Can My Dog Get Pregnant Wil In Season?

You should have given complete information about your dog like breed, age etc. If your dog is over 8-9 months of age then she can become pregnant if mated with male dog during heat. This mating is possible when her vaginal bleeding will be ceased or reduced and she will show flagging.

In my opinion, you should not breed your dog until the age of 2 years because at this age she will be physically mature enough to afford stress of pregnancy and labor. But it will be more better not to breed her and get her spayed. This will avoid many future complication.