Been spotting on an off an haven't had a real period this month. Nov I had 2 periods n same month dec had on 23 an jan haven't had one just been spottn on an off like 2weeks ago tried to get mirena but it only went n 4cms so they couldn't put it n. Took a pregnant test an said negative so why I'm spottn an have not had a real period this month took std test came back negative so what's wrong this is not normal for me