So in January My "Period" Was only 3 days long and a week late its always usually only a week late if it is but its usually a week long so it was abnormal for me.. a few weeks later my breasts were really sore.. so I took a pregnancy test and it was negative.. I started feeling really tired, nauseous, back pain, eating more.. so in a few weeks I took another pregnancy test which came out negative again.. so I was like whatever.. in feb I totally missed my period.. I did not bleed AT ALL! I took another pregnancy test after a week of missed period still negative... then another in another week I took another it was still negative.. I still didn't bleed and it was nearing march, so I went to this van which gives pregnancy tests and treats STDs and stuff.. they tested me for pregnancy and I took medicine because I had chlamydia.. long story.. and was still negative but I told her about the symptoms and she gave me a lab thing to get my blood done.. I got the results today and they said it was negative for pregnancy.. I was 37 days late but 2 days ago I started spotting its barely there so light like its not evenn there at all no joke.. I don't know what's wrong with me if I'm not pregnant.. this is so not normal for me and I'm freaking out.. what should I do now?