Breastfeeding and Trying for #2

Daphne.

Hey mamas!! Starting to get that itch for baby #2. I'm still pumping at work and BF at home and haven't gotten my period almost 10 months PP. Do I need to wean her before trying? I know you can ovulate even without having your period but doesn't BF act as a natural birth control? Not 100% of course but somewhat?