Hello…first time poster here. Thanks in advance for your feedback! I’m 43 and have been trying to conceive for about a year. I’ve never been pregnant. My period is three days late. Is it too soon to test? When would be optimal? What is the most accurate test? I’m an anxious mess and don’t want to jump the gun but need to know the best course of action. Thank you!

EDITED TO ASK: What is DPO? Pardon my ignorance! Also, is there a “best” time of day to test? Thanks!