Sayang, abdominal tightness and lower back discomfort at 35 weeks boleh normal, tapi since you're also having pain when baby moves and some discharge changes, please check with your doctor or go to your clinic soon, better safe than sorry at this stage of pregnancy, okay? A few of us mums in my group experienced similar at that point and most turned out fine after checkup, but some needed a bit more monitoring, so best to get it checked out. Your gynae will put your mind at ease, and that's what matters most now. Take care of yourself!