Marrying a soldier

Hi, my partner Paul and I have been together for nearly 6 years and have been engaged for over a year. We are planning our wedding together but have ran into a few glitches along the way. I am currently 5 months pregnant and money is getting diverted to setting up our house for a baby. My father was also supposed to pay a big chunk of the wedding cost but he recently got remarried and a fall out followed resulting in no contact between him and I, so no financial support. Paul works in the Scots army based in London at the moment on a very basic wage, leading to now financial worries for an impending baby and wedding. Any help would be greatly appreciated and welcome however small or big. Please help us marry .