Brown spots instead of period

Hi, I would like to know what's going on? My cycle lasts from 30 to 36 days and I've been expecting my period since the 24th this month. Tomorrow would be the 36th day. On Saturday I noticed a brown spot and I thought my period was coming, but Sunday came and my period didn't, I got 2 more brown spots. Yesterday (Monday) nothing happened either. And today (Tuesday) i have another brown spot. My sister thinks I might be pregnant but really doesn't know, my friend thinks it is hormonal. What do you think? Other than the spots I don't have any other pregnancy symptoms. Well, maybe I've been more tired than usual, but that could be for many reasons, right? Please tell me what you think. (Oh, by the way, I bought a pregnancy test but it came out negative on Sunday.)

Hey you shouldn’t be worried about this too much. First of all if you are suspecting that you are pregnant you must have good reason.

Did you have unprotected sex? And if by any chance you did was at least with your regular partner?

So the pregnancy test came out negative and that is good thing. If your period is still late than buy another one just to be sure.

There is one good reason to have brown spotting instead of period. If you feel tired and maybe like you are going to get sick this could be your answer. One month I had flu and my period didn’t come at all. Afterwards I have checked with my doctor and he said it is fine when period doesn’t come one month due to flue because your organism is way too exhausted to deal with everything in the same time. So drink a lot of vitamins and let us know about results.