Abdominal pain 6 weeks postpartum

Aoife
Hi mums, 
I had my check up with the ob/gyn a few days ago and she did an ultrasound and Pap smear etc, all was fine. I've stopped bleeding and have felt recovery was going well. I had a completely natural drug free birth and I've been exclusively breastfeeding since my baby was born.
 Now suddenly the last few days I have sharp abdominal pain which comes and goes (especially if I bend over or I'm carrying my baby for a while). Is anyone else experiencing this? I guess it feels a bit like the afterbirth pains I had initially but surely 6 weeks on that should be over with? 😕 this is my second baby, didn't experience this last time. 😔