Aiyoh that sounds so uncomfortable lah, especially this late in pregnancy! A few of us tried pure coconut oil or even just Vaseline in between the thighs, it's safe and helps reduce the friction, especially when you're so swollen at 37 weeks. Some mum friends also swear by talc-free body powder to keep the area dry, tapi honestly coconut oil works best for the actual soreness. That said, if it's really painful or looks infected, do check with your doctor or midwife ya, they might recommend something stronger or want to make sure it's not something else. Hoping you get some relief soon so you can sleep properly before baby comes!