Relaxed Ttc?

I've had 2 kids and I went crazy using opks and temping and just making it no fun and more of a job to get pregnant. My husband and I just decided to start trying for another baby but I don't want it to be a chore again. This will be our last child and I want to do everything completely different this time. I want to make ttc fun and relaxed. Can anybody share their experiences with this? Did you conceive quickly? Was it less stressful like I'm hoping it will be? I'm excited but nervous and would love to hear some of your experiences. Thanks ladies!