What are the signs for cervical cancer?

Mostly...none. It is a silent killer.
It almost took my life , i was so lucky that it was picked up on a pap test. Please have yearly pap smears, no matter what your age, and ask for the thinprep test, it is better! love light and luck to you!xxx

There are non that I know of, I had CIN 3. I never had symptoms till they cut the hell out of my cervix.
a tumor
Go get a pap smear at your doctor's office. It will either confirm or remove any concerns you have.
irregular bleeding is one of the signs but i'm going to direct you to Jo's Trust, a site that that will give you all the info you need to know.
http://www.jotrust.co.uk/
This is charity that aims to raise awareness for all forms of pre cancer and cancer of the cervix, there is also an online support group if you affected by cervical cancer or pre cancer. The best thing is to get a pap smear done at least every 3 to 5 years. Pap smears cannot detect cancer but prevent it by checking for cells that may show pre cancerous changes that can then be treated by removing the cells.Hope that helps.
personal experience.
From the National Cancer Institute, the 7 warning signs of cancer are--

C- Change in bowel or bladder habits

A- A sore that does not heal

U- Unusual bleeding or discharge

T- Thickening or lump in breast or elsewhere

I- Indigestion or Dysphagia (difficult or painful swallowing)

O- Obvious change in wart or mole

N- Nagging cough or hoarseness