help please

Ebony
Hey guys, I'm 5 months pregnant and I was just wondering if anyone could point me in the right direction!!
I'm in need of a pree natal DNA test (non invasive of course) but I've been looking around and there all £800+ and I was just wondering if anyone has or come across any cheaper. 
This is just for the simple fact I need to shut my baby father up😊 so yeah if you know id appreciate it