My Siberian Husky is 3 weeks pregnant and is showing brown discharge. Is she aborting?

My Siberian Husky bitch is three weeks pregnant and has today started to show a brown discharge. She is tired and has vomited and I am worried that she is aborting. Could she be? I have had problems breeding her in the past. I have another bitch who bled for a day in her third week and then proceeded to give birth to a healthy litter of nine pups. Any chance my bitch could still have pups?