Should I worry?!

Hi I just turned 36 in September and my boyfriend and I are currently trying to get pregnant! I am excited but also nervous at the same time. I use the app to track my cycles every month and as sometimes they come a a day or two before the app says and it has almost been a week before my cycle mainly due to exercise. This past year I did intermittent fasting and worked out at least 4 days a week. I now can managed my weight without working out so much and limited fasting. I am getting nervous because it hasn’t happened yet and it’s making me a little anxious. This would be baby #2 for me and my son just turned 14. I don’t have a history of any uterine issues or cancer in my family. I had a c-section with my son. I am so excited to be a mom again!!!!! Should I be worried or when would be a time to worry?? Is there anything else I should be doing?