Any help, TIA

I took Norethisterone every cd14 to induce a period,along taking with 500mg of metformin before bed..usually i will bleed heavily from cd1 to cd5 and light flow till cd7. But now im on cd4,still getting very light flow. Didn’t have my period last month, checked pregnancy test and the results were negative. So i counted till 14 days and took the pills to induce my period. Does anyone has problem like that or similar to mine? Or maybe im pregnant? Thanks in advance. Hoping for a bfp after this 🤞🏻