What Do Irregular Periods And Cramps Indicate?

Hi there...
I started taking Cerazette last October so I have been on it now for 6 months. My periods were normal to start with but now after 6 months they are irregular or pretty much nothing... At the moment i keep getting tummy cramps and my tummy is very bloated... I also have clear/whitish discharge and a constant feeling of dampness... I have a partner and we do always use a condom everytime we have sex but not always from the start... I'm worried I could be pregnant but havnt had a chance to check yet.. though we do use protection as well as me taking the cerazette... but Im very uncormfortable at the moment and my tummy doesnt seem to be going down and the pains almost constant and dull but sometimes a bit sharp... Thanks...