This normal? [Slightly graphic, a little long]

Today my bowel movements were very bad but eventually it worked itself out, after wards I tried to eat but could barely manage down a small piece of home-made pizza. I just couldn't get past the smell or the taste, after a few bites I felt like I was going to lose it all. [Have been drinking lots of water]
This week I am to be getting my period, yesterday or today[16th] I'm expecting it. Well, I haven't EVER missed one. Earlier I got a slight spot on the tissue, was so light pink. It stopped. I went to the bathroom again and there was more blood. It was strawberry-ish and very light. My stomach feels more bloated than other periods and I've had that feeling, like I just am pregnant but I know that can just be my over-excited emotions to wanting it.
Should I just wait and see if it gets darker?
If it does get darker, could I be pregnant still?
Should I give up hope of being right now and just try again sometime?
When will I be able to tell that I am?
What can I look for that will tell me I could be pregnant?
Sorry for so long/so many questions. I'm just nervous as ever.

Pee on a stick.

Take a test ...

Take a test. If you're supposed to start yesterday or today then it will be pretty accurate.

I didn't know if it'd be too soon to do that or not.

<blockquote><b>Quoting Masquerade:</b>" I didn't know if it'd be too soon to do that or not."</blockquote>




If your period is late, it would probably be positive.
If you're pregnant that is, good luck.

Quoting Masquerade:" I didn't know if it'd be too soon to do that or not."

It's not too soon. If you are meant to have started your period already a test would be pretty accurate.

Today is the 6th...did you mean the 16th or 6th for when it should begin? Cuz otherwise you have ten more days.