Sayang, dengan demam dan infection macam ni, please don't wait, go to the hospital or call your doctor today, terutama dengan perut berdenyut² tu at 18 weeks. Ni bukan benda yang boleh tunggu-tunggu sebab pregnant lagi. Doctor kena tahu symptoms baru ni straightaway, okay? Take care of yourself, and jangan stress, most moms overcome kidney issues during pregnancy, but you need proper monitoring sekarang ni. Thinking of you!