Do you thik i may be pregnant?

ok i need your help everyone (again) do you think im pregnant? or if any1 else has experienced these please let me no... ok i have been feeling sick (mostly only at night) for 2 weeks or so, im tired loadsss all the time and i go back and forth to the loo about 3 times an hour (not drinkin loads either) my are not sore but do they always have to be? has anyone when they hav been preg not had sore s? and also im lozing my balance allot when my diet is healthy, and my hormoes are terrible one min im cryin then laughin then im irritated and anoyyed my boyfried upset that he cant do anything right im always getting at him and i dont no why :S .... please help thenk youu xxxx