Sayang, even though your previous labours started with bleeding or water breaking, every pregnancy can be different, so trust your body's signals, tapi jangan tunggu lama-lama if the backache and lower tummy cramping gets stronger or closer together. Please call your doctor or go to the hospital sekarang to get checked, especially since you're at your fifth baby, they can examine you properly to see if you're in active labour. Contraction patterns can change from one pregnancy to another, and it's always safer to get the all-clear or get admitted if needed. You've got this, mama!