Could I be pregnant?

So, I am 27 years old, married and not actively TTC, but not quite preventing. I use this site to track my period, and as it turns out, I am 8 days late. I bought a 2 pack of the digital PT, took the first one wrong (dont even ask) and got back a negative result on the second one. That was on Wednesday (4 days ago) and I drink an obscene amount of water so it very well could have been diluted. Keeping this in mind, i just bought a 3 pack of non digital PTs and took one- came back negative again. All i had to drink today was a cup of coffee and maybe 4 oz of water - not really possible to be diluted. So here i am, 8 days late- which never ever happens- I'm usually very regular. I was pregnant once before and when I took the test it came back positive VERY quickly. I've been exercising on and off my whole life but just recently started mild weight lifting - could this throw off my period? I have NO symptoms of AF coming anytime soon... Is it possible to just skip a period? I wasn't really all that concerned, but now I am obsessing about knowing!

This would be my first. I'm 29 years old and although we're not TTC we did the baby dance much more often this month (thanks, Valentine's day) and now I'm one day late (usually like clockwork). Weird thing is I don't feel aunt flo coming along. Boobs are a bit sore on the sides although they were more sore yesterday. My skin is breaking out (ugh, joys of being a woman) and I just feel different. I also want to eat a bacon grilled cheese sandwich every day. I've even downloaded umpteen billions apps for my phone like prenatal nutrition calendar etc... I am trying to hold out on buying a pregnancy test but feel my self-control wearing thin. Any comments/advice/similar stories?

Well I might just be wishful thinking, but I THINK I might be pregnant. I have 3 kids, two from a 6 year relationship, and one from another 5 year relationship, so I know what it's like to be pregnant before. With them though I had implantation bleeding and all the classic pregnancy symptoms, so it was not a surprise really. My last period was 01/28 and I was due for one on 02/22. Normally Aunt Flo comes like clockwork and the only times in my life I was late was when I was pregnant. I've been married to my husband for a little over a year now and we've been actively trying without any success, ovulation tests, negative hpts... He doesn't have any kids and this would be his first. I haven't had any signs that Aunt Flo is coming, normally I have a good case of being crabby, my back hurts and I can only sleep on my stomach, but none of that going on here. Since I'm going on 4 days late, I'm going to buy a pregnancy test when I go out again or have my husband pick one up, but I want to surprise him so I think I'll just try to do it, that opportunity won't come til Friday though, so I'm in waiting until then. I'll update when I find out what's going on. Hoping I'm pregnant because my husband will be thrilled, but as this would be number 4 for me, and the first 3 weren't easy at all, I don't know how my body will take it.But for right now it's the waiting game, so I guess only time will tell.

Month of January my period came 3 days early only it was not a normal flow. The color was brown and it was extremely light almost like I was spotting it lasted for 3 days then stopped. I have two kids and never experienced anything like this with either of my previous pregnancies. I took a test two days after the "period" stopped, it was negative. I am feeling bloated, sore breasts on and off, dull back aches, very vivid dreams at night, exhausted throughout the day, and some light cramping every couple of days. Is it possible that I am pregnant and maybe I tested too early?

last period was Dec 29 2012. I'm not ttc don't even think its possible. funny thing I had a psychic tell me I was pregnant. laughed it off. 3 days late sore. boobs. constipated full feeling. with eating. few episode of sickness. lower back pain mild stomach cramping. going to bathroom a lot ....very Moody .. tested today BFN... anyone else having this... reason I dont think its possible to be pregnant. is the guy had. a vasectomy almost 9 years ago.

Okay i had sex on 01/04 which was my ovulation day. My period was 2 days early, very weird for me & only lasted for three days. was supposed to get my period on 01/18 but i began light spotting on 01/16 it was pinkish & not a normal day two, there was not a normal flow still not heavy yet & my periods are usually very heavy on the second day. the 3rd day there was little to nothing and i woke up the next morning and my period was over... also my cycle is 29 days & my periods last about 5 days