Just want to know that I’m going to be ok

I’m new to this whole ttc thing and I’m just a little concerned. My periods have always always been on time, but this month my period came 4 days later than normal. I just want to know if that’s ok? I have such a fear that we are going to have trouble because we both have multiple health issues, and I over analyze everything. I guess I just need a virtual hug. I can’t be the only one who feels like this.