Most likely an infection like a yeast because of the increase in discharge you also have an increase in bacteria so you are more likely to get infections out of no where...good luck and best wishes
I agree with agrell, it sounds like a yeast infection to me. Which are completely common in pregnancy. I would call your Dr to get a proper diagnosis so you can treat it properly.
thank you for the advice :) i have booked an appointment for tomorrow so shall see what happens thank you :)