Ai, postpartum hypothyroidism is quite common actually, a few of us mums kena this after giving birth, so you're not alone! Best to check with your doctor or get your thyroid levels tested properly, sebab sometimes the symptoms overlap with postpartum fatigue and it needs proper blood work to confirm. Once you know for sure, your gynae or GP can guide you on treatment and monitoring, especially if you're breastfeeding. Hang in there, momma, many of us managed it fine once we got the right support!