Maybe you ladies can help??

Destiny

I know I’m about to sound ignorant or unknowlegable, but i figure you ladies are smart and helpful. My husband and I just started trying again but are working harder and harder at tracking and logging everything. Today is the last day of my fertile window and I ovulated the 16th. The last day of my period was the 7th. When should I try to test? How do I gauge the weeks and days like when I see “4+3 weeks DPO” or whatever? I don’t know what any of these abbreviations mean and I don’t know what weeks/days to try and test. I’ve seen so many people get their positives because they’re avidly using the app to track and help. Does anyone please any info they can share with me? Thank you!!!