could be possible. get a pregnancy test...
Yes. My brother and I are only 11 months apart. Which means that my mother got pregnant with my brother 8 weeks after I was born. My Aunts youngest two are only 10 months apart. She never had a normal period after the first one was born and got pregnant with her first ovulation cycle.
I'm so sorry for your loss. I hope that you find peace and go on to have a happy and healthy pregnancy.