I can! Just a few months ago I found out I was pregnant (with my 3rd) and my daughter like yours, was just 9 months old at the time. I was devastated, excited, freaked out, call it what you want, I felt it seeing that positive test so soon.
To be completely honest, I'm 21 weeks pregnant, and just NOW starting to feel great about this pregnancy. Don't get me wrong, a third child was in the works, but not so soon. I was hoping to wait until my daughter was 2.
It will be alright, I'm just starting to realize that myself. Women have children close in age every day. In fact, I come to learn that there are lots of benefits to this.
Just as the new baby comes your toddler will likely being potty trained or just about there. No changing double diapers all day.
Your little girl will be very eager to help care for the new baby and love her. My daughter is getting to the point where she just loves babies to death and is expressing her maternal nature.
Yesterday my friend came over with her 2 1/2 year old daughter and I got a glimpse of our future. Our kids are about 10 months difference in age. They were so sweet together, watching them play. (I'm not delusional, I know it won't always be like that).
But you'll have two little ones that will more likely than not grow up to be best friends.
Good luck with your new baby!