Period lewat 20+ hari

Assalamualaikum, hai mommies.. Ada sape2 experience bnda yg sama mcmni x? Pregnant or x, confuse sbb period dh lewat 20+ hari but bila buat upt still -ve, naik 1 line je... Last period 9/12/2020 What should i do, ada sape2 boleh bg cadangan?