Extreme irritability - anyone else get this after conception?

[hmmmum]

Hi my dh and I decided to start trying for a baby about four days ago. Today I feel unbelievably irritable and grouchy. Is it possible to have this sign of pregnancy this early? I feel really hormonal. I know I should just wait and take a pregnancy test when I can, but can't help but speculate. I guess I'd like an explanation for feeling this crap.
Anyone else experience symptoms like early on in pregnancy?
Thanks

id be incredibly suprised if this was pregnancy induced. im now on third one and each time ive only started to feel the effects once i hit 6 weeks or even more, in fact at four days since trying it would be way too soon for an ambryo to have implanted and created any symptoms.
maybe your feeling this way due to the pressure ure now feeling with knowing you have made such a big decision and thats putting you under a bit of stress?
either way try to relax and enjoy the baby making process as it could take a while and if you read into every feeling you get along the way you will end up torturing yourself with mabye's!
and good luck :-)