could this be it?

[Sammiesfirst]

Hey ladies, I'm not sure if I'm in the right forum but Im experiencing something I never experienced before. So my period was suppose to come may 7th but it never came my bf and I have been trying to conceive so needless to say we havent been using protection. On may 16th I started spotting it was very light and brown it lasted for about an hr and was very light. It continued for two days just in the a.m I would spot for an hr or so then it stopped I figured it was I.B but it threw me off when I got my period on Monday May 19th ... on tuesday I had it for half of the day. ..and today nothing at all expect like discharge which is sooo weird I usually get my period for 5/6 days wth could this be im soooo confused.scared.nervous. .forgot to mention I took a test on 15th it was negative what do u guys think it is please help!!!