[Lady of Yorkies]

Have any of you heard of a female coming back in heat after only 3 1/2 months?
Lacijo was in heat in January and I bred her to Mr. Big. She went full term from the first breeding, 63 days. Laci had one little girl breech, she got stuck so we lost her at birth. The next one was also a little girl, born in the right position and smaller. This one Laci tried to move while we were gone and she injured the babys leg. It went septic and we lost her too. Autumn Rose is pregnant and "beating up" on Laci and when I checked Laci today she looks swollen. I had not thot about her possibly coming in heat until today so I hadn't been checking her. I need to know if she could still be swollen from being pregnant, it has been over a month since the baby died. Or if there is a possiblity of her coming in heat early. Sylvia