You really should tell her you thought about it and you don't want more kids. If that is a deal breaker then let her know she can just end it right there and then. I would do this sooner than later. Keep your head up and if it ends, steer it in a direction so it ends gracefully. I wouldn't let it bother you or worry about the small town problems. Its only a problem if you let it be a problem.

H(37) W(35)
D8, D5, S3
T20, M13
BD 8/31/18
EA Discovered 9/13/18
Mediation 10/3/18
W files for D 10/12/18
W moves out 11/10/18
EA confirmed 12/25/18
D Final 1/10/19