Is it cervical cancer ?

Please help me...I am so frightened.I have just become 24 years old and I have two Daughters who are 2 and 10 months old. I am so scared that I have cervix cancer...because for a few days now I have been having slight lower abdominal pain witch is actually more uncomfortable than painfull...at first I thought it might have been wind as I sometimes get terrible bouts of Colic,I also have what I think is cervix twinges...like my cervix might be contracting.It didnt hurt when me and my fiance had sex the other day but last night when we had sex it was painfull when he went deep and generally quite uncomfortable.I have no bleeding or periods since coming off the pill in early January.I just feel always so uncomfortable down below and up in side...I'm prone to getting thrush and things like that.I have had seven sexual partners since the age of 17 but I have been with the same person (my fiance) for almost 2 years now.I know I dont have any sexual transmitted diseases and I know I am not suffering with a urine infection.I really am so afraid of dieing and leaving my babies.Especially with everything that is happening to poor Jade Goody.I am so sure I must have Cervical cancer...please help me.Thank you for your time.Jade.