a question for anyone who's been cheated on.

So for anyone who have been cheated on I was just wondering were you able to forgive your significant other and mend the relationship or did it ultimately destroy your relationship ? 
A little bit of backstory here I was 7 months pregnant back in October 2016 and my husband slept with a woman he worked with and also gave her pills in exchange for a blowjob he had talked about running away with her but that didn't happen. It is now 8 months later and I have two children with him 2 and under. I'm struggling to keep my marriage together and I'm honestly not sure if I want to be together anymore but I'm torn 
I can't seem to "get over it" as he tells me to.