What's it like to be married for many years without being pregnant?

I am 28 years old. I have been married for three years. I just got pregnant. I fell in love with my husband for the first time. I have never had an abortion, and my period has always been punctual and normal. Fearless in the first year, worried in the second year. I ruled out my functional and organic problems in the hospital. In the third year, I was afraid. If I'm not pregnant, I'll go to the reproductive immunity center. Fortunately, I was pregnant at last, and I studied Chinese medicine myself. The gynecology teacher told me that some people have to be born late (I don't quite understand what the older generation said), but I couldn't find anything wrong. That's why there is a saying that there is no need to worry too much, and there will naturally be a baby. If you are not pregnant, don't bother. It's better to go to bed early and get up early, pay attention to diet, develop good living habits, feel comfortable, take care of yourself, and when fate comes, the children will come. Finally, I hope every child can be born in a loving family and grow up healthily and happily. ?