Could I be pregnant?

I was wondering, maybe if I might be pregnant? I ovulated on CD 7/8 and we had a couple times around the time and on that day, and I had weird light cramps on CD15, possibly Implantation? and today is CD21. I have been eating constantly, no matter what I am eating, I can't seem to get myself to the feeling of being satisfied. My boyfriend also told me that my breasts seem to be a little bigger then normal, (He has no idea what I think I might be pregnant), but they are not tender. The last couple days my stomach has been feeling kind of weak.. (That nervous feeling like it's going to fall out from underneath you), and I also have been extremely tired lately, even after a great nights sleep, I'm ready to go back to bed within a couple hours of waking up. This website is pretty accurate for tracking my cycles, and tells me I should start on the 28th. What is the earliest you think I could take an at home test?

Hi Everyone,
Im new to this and not familiar with the abreviations so please bare with me.
My last period was December the 9th, i have never missed my period before apart from two other occasions when i was pregnant. Once i had an ectopic and shortly afterwards suffered a miscarriage.

Im 28 and i have not been pregnant in years but my partner and i recently decieded to start trying again. I have taken 2 pregnancy tests which have both been negative but still a missed period. My doctor says some times these things just happen to women!!,however i am not convinced.

I have been have been feeling unwell and having lower back pain that has been uncomfortable at night. My bestfriend has neg tests and periods 4 months into both her pregnancys.

Please help!

Has anyone else had neg tests and been pregnant?
Has anyone else just missed their period for no reason but had pain aswell?

Ladies,
Last month (december) My cycle was exactly 1 week early. It started on 12/19. Two weeks later I began to have cramps, as if AF was coming again. My cycle is normally 28 days,but since it came early last month, the cycle span was 21 for december. This month it has not come yet.. So that makes me on cycle day 32 or 4 days late. Last night my stomach felt as if it were tightening. Today I felt a tingling sensation in my belly button for half the day. What Is Going On??? I have not had any spotting, any cramps So could I be Pregnant? Please give feedback.

well last AF was on november 25 and my cycles are every 30 to 33 day cycles and i am way late about 22 to 25 days late adn all the HPTs that i have been takin have been negative but i have a lot of the pregnancy symtoms as I did with my other two. I wnet to the doctor and she said that if I am I was in very early pregnacy. she took a blood test and i got the test back it was negative too. is there a chance that it was to early and the spotting that I got on the 26th and 28th of december was due to ovulating and that i could be pregnant? I am totally confused and don't know what to do i have about 5 or 6 days before i should start for this month but usaully i have all the signs that af is coming and i have nothing. please if you have any thoughts or encouragement that would help me thru this

I've always been very irregular unless I was on BCP. I got off the pill in Sept 08. I got my next AF exactly 28 days later (in Oct) and had it for 5 days exactly(and as if I was still ON the pill). Then I didn't get AF again until 42 cycle days later (the very end of Nov.) which turned out to not even be a period at all it was a "estrogen withdrawl bleeding" which lasted about 8 days. During this time my husband and I started taking some "fertility vitamins". Now I am on Cycle day 50 and I haven't seen so much as a pinkish stain, although I've had a slew of both AF symptoms and Preggy symptoms. I have a STRONG feeling I'm just not getting my AF. I plan on testing on 2/8/09 only because I don't feel like buying another PT before then. Which is another 3 1/2 wks away,,, tick,tock, tick,tock,,,,,,

i had my period on Dec 7,2008 it was lighter than usual and lasted 7 days which is about usual for me, four days after my period ended i started spotting brownish and then two days later it was as if i was getting my period again that lasted about 4 days. i took a pregnancy test to see if i was pregnant but it was negative, i haven't gotten my period for this month yet and i am not experiencing any pre period symptoms i usually get like breast soreness, im going to the doctor soon, but im worried and wanted to know if anyone else had experienced something similar. could it be pregnancy a possible miscarriage?