Ai, aku pun kena gini masa 21 weeks, memang sakit pinggang lah yang paling buat aku penat tidur, but the sharp stabbing feeling in the perut, tu kena check with your doctor la, better safe than sorry sebab tak semua cramping is normal even in the second trimester. Try sleeping with a pillow between your knees or under your bump, that one helped me jugak, tapi honestly kalau the pain is quite bad or persistent, jangan tunggu, go see your gynae sooner rather than later okay.
sangat normal...lagi² nak masuk trimester ke 3 kadang sampai insomnia.. prgnant no 3 saya tidur duduk sbb lansung takleh baring...