I had my last depo shot in October of 2020, it is now the end of March 2020 and i still havent had a period. I have been having unprotected sex and the last time was just around 2 weeks ago. Once yesterday i had light pink smudge when wiping after going to the toilet then nothing all day.. very confused at the moment as i dont know whether this is my period trying to return or maybe implantation bleeding? Have been trying since January to conceive and had slight what i thought were pregnancy symptoms backat the end of January/beginning of February but when looking this up it seems like it may have been side effects of coming off the shot. I have taken a pregnancy test today and this came back negative although as i dont know when my period will return i dont know when im supposed to take a test. Is it too soon to tell and could i potentially be pregnant just taking a test too early?