Pregnant and divorce

Well I'm 7 weeks pregnant with my boyfriend that I have been with for 9 months. My ex (husband) and I have been separated for 10 months. In Missouri apparently you can't get divorced if you're pregnant even though my ex obviously isn't the father. So now on top of legal fees I have to pay another 1500$ to establish paternity. So much stress. I know it'll all be okay but man this is some crazy stuff. Anyone else been in this situation before?? Back story; my marriage was almost 6 years long we have a son together who's turning five next week, the marriage ended when he decided to sleep with a girl on a couch in our living room while I was home. I woke up for work and walked in on them. I just want it to be over so I can move on with the true love of my life.