Ohhh sakit jari, especially both thumbs sama-sama, memang leceh! A few of us had this postpartum, ada yang dari breastfeeding position, ada pulak dari genggam baby terlalu tight or repetitive motion dengan botol/breast pump. Kesian betul, sampai buka botol pun jadi drama. Kelakuan ni biasanya improve dalam beberapa minggu with rest dan stretching, but since you're at 6 weeks postpartum and both thumbs affected, better check with your doctor or physio just to be safe, bisa jadi inflammation je or something else, so doktor can confirm and guide you properly.