Confused about visa and need help please

• I have been in the UK for 3 years from Fiji on a spouse visa
  
  My visa runs out on the 18th of April and i need some help in understanding what type of visa i need to apply for.
  
  I was married before to a British citizen however got divorced after 1 year as she committed adultery.
  
  I am now with a girlfriend and she is pregnant, we are living together and our baby is due in September.
  
  What visa can i apply for to stay in the country for another 2 years so i can then apply for British citizenship and look after my new family.

  03 Kwi 2008, 09:50 Mika