signs of pregnancy while still breastfeeding

Jane • 26- 👪 1 June 2016 + 👶July 2018
Just wondering what signs you got you were pregnant while still breastfeeding. 
My Bub is 11mo and I still haven't got a period. I've been feeling 'different', had an aching back and cramping. 
Hopefully it's AF returning but I can't rule out being pregnant as it could be possible.