Aww sayang, memang normal je nak rasa sakit belakang dan ngilu-ngilu perut masa pregnant kedua, especially bila ada toddler yang asyik naik perut you, tu extra strain je! Sama je dengan I, first pregnancy lain, second pregnancy memang lain sebab badan dah stretched dan ada little one yang nak duduk on top of everything hehe. Doctor you dah cakap abdomen ok dan baby's measurements ok, so that's the reassurance you need, try to trust his words walaupun anxiety tu memang real, I understand. The discomfort when lying on your side tu normal jugak sebab second pregnancy ligaments dah lain sikit, so if lying on your back feels better untuk now, that's ok je. I'd say maybe check with your doctor again if the body aches get worse or if anything feels different, just untuk peace of mind, but from what you're describing it sounds like typical second pregnancy discomfort lah!