Aduh, I haven't personally tried BBT (basal body temperature tracking) sebab pakai contraceptive pill je, but a few of my mum friends who were trying to conceive dulu swear it works, they said the pattern really clear kalau track properly every morning before bangun dari katil. The thing is kena consistent and disciplined, sebab sekali lupa or bangun lambat, data boleh rosak, so it's a bit tedious for some people. Mungkin boleh try combined dengan apps seperti Fertility Friend to make it easier, tapi honestly I think most people nowadays prefer just the ovulation tests lah because dah more straightforward. Have you thought about what method works best for your lifestyle?