My periods arn't necessarilly regular but for about 3-4 maybe 5 months they were 5 days each always starting around the same time and usually medium flow and a day or two of a heavy flow maybe one day light and one day spotting. Last month lasted 4 days and this last period I got cramps that were hurting my legs and kinda sharp one time and hurt especially because I was wearing tight pants and then I started my period 2 days erlier than my period calander said. It was light flow right when it started the next day it was a medium to heavy flow, the 3rd day it was a light flow and towards the afternooon barely nothing and the next day was kinda just spotting enough to wear a panty liner. I thought my period was completely done then today randomly had spotting with brown old blood and then it looked like the pad was wet around that. I am 16 have been super tired, don't really feel nausea but feel like there is something in my throaght and every now and then feel kinda sick but only last seconds, felt the need to drink water more too. and I did have sex with my boyfriend when I was ovulating. Could my lighter period have any relation to pregnancy or does that sound like a period and I should just not worry about it at all. I tried a home remedy pt with tylonal and hydrogen peroxide it is suppose to turn blue if you are but it turned a yellow color with a little green tint but I don't really know if those even work. Just worried