If i am peeing constantly does it mean im pregnant?

No. : It means you are drinking too much water, have a uti, ingesting caffeine, or have diabetes insipidus or diabetes mellitus. These would all be more likely than an early pregnancy causing your problem. If you want to find out, take a pregnancy test.

Not very likely : The enlarging uterus can put pressure on the bladder thus causing urinary frequency, but this usually means the uterus is quite big already, at least in second trimester. Since you don't even know that you are pregnant, the cause of your urinary is likely from something else--overactive bladder, urinary tract infection, interstitial cystitis etc..Consult doc for eval. Good luck.