Alah, semua ni normal lah at 20 weeks! Pregnancy hormones slow down your digestion, so bloating, gas, and constipation memang going hand-in-hand, a few of my mum friends complained the same thing during second trimester. Sakit tulang ekor pun sebab baby growing and everything shifting down there, plus constipation makes it worse because you're straining. Minum plenty of water, makan banyak fibre (dates, oats, vegetables), and try to walk a bit, trust me, ini helps dengan both the wind and the constipation. But if the pain gets really bad or you're worried, better check in with your doctor la, just to be sure everything okay with baby. Jangan worry too much, most of us went through this phase!