Late Period, Light flow, slightly confused

I've read through the forum, but every person is different and you know how you just have to ask yourself.. anyways. x.x
My periods normally appear every 30days, I'm rarely late. They are always heavy, full of clots, and lots of pain. My period was a week late, and I normally can tell within a week when I am always going to start, and I didn't get any signs. Today is a 8days late, and I started bleeding, it was light and I used two pads today which didnt even fill up all the way, very abnormal for me. Yesterday I had a sharp pain lower right, followed by throwing up; thought I was going to die. I am confused. I don't know why it would be late, it never has been. Not taking any pills. I don't know if I could be pregnant and I am bleeding lightly if I can still take a test with a good result. The only abnormal thing is that I've had gas O.o' ..which I dont normally have.
x.x I'd really appreciate it someone can help me with this and I am sorry it's so long. Just a little stressed now that's 8days.
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Seeing that this was posted a while back....what ended up happening??

I have the same exact symptoms of you GreenCheriSkittle, and I was wondering if you could tell me what happened? Were you pregnant? Or was it just a fluke?

I usually have a very regular menstrual cyle. My period comes on the 28th day of my cycle every month with a lot of pain and cramps. Last month it was four days late and only lasted 2 day. Also i usually change pads every 2 hours when i changed it wasnt even filled upo as usual and i didnt get as much cramps as pain as i expect every month. I had sex with my ex-husband about 3 weeks b4 my period was schedule to start. When we were together we tried to get pregnant but i couldnt. Could i finally be pregnant?? i also have a clear vaginal discharge right now 2 weeks after my last period. Any one could advise.. i am just curious...

I cannot tell if Im starting my period, or if Im having a very light one. I spotted like 4 months ago, and now every month I have a SUPER light period i think.It doesnt even kind of "flow into the toilet". Its just when I wipe there is "blood". So I'm wondering if Im starting my period or if this is my period and its just very light.

i am 10 days late and then today i have some bleeding and it is much lighter than usual and i don't have any pain but i have sore b**bs, i have where i am not tired one minute and then tired the next and am sleeping, i also have a bloated stomach and my b**bs are heavy. i am bleeding very lightly but it is enough to almost fill a pad, i have taken 4 pregnancy tests and 3 came back negative and one had a very very very light positive pregnancy line. i am very moody and i have weird cravings.can anyone tell me what they think about this and give me some advice on what to do?????