You are not alone.
When I first discovered my partner's infidelity, I felt the need to be seen and understood, to make my story known and heard, to share my pain. I also learned that every person has their own individual response to infidelity, and some of those responses contain strong opinions about what you are supposed to do. And sometimes that is not helpful. I found comfort when I discovered a safe non-judgmental space to share my experience with others who could relate. There was no pressure to make any decisions because everyone had a different journey, and we recognized that. I joined the closest Beyond Affairs Network group and then eventually went on to facilitate my own group to be close to home. You can look for the closest group and if there isn't one nearby, consider starting your own. Another place you might find support is Meetup.com. If you are in the Toronto area, check out this support group for women on Meetup. Unfortunately or fortunately, there are many people around you in the same situation. Finding one another and connecting can be tremendously healing, you are not alone.