Doctor says I could be releasing multiple eggs per cycles?

For those that happen to know how did you know for sure? I track with ovulation tests because I can’t be on any form of birth control for medical reasons and we do the natural family planning method with pull out. It’s worked for 5+ years and we got

Pregnant once when we were ready and tried.

So Iv read before that if you get a multiple positive with OPKs on other forums that it’s just surge and that it means nothing if you already got your first positive. But I happened to message my Ob because I was over a week late, negative pregnancy tests ect. I was confused because my

Previous pregnancies ( one loss and one birth ) they were exactly alike in the beginning I would always know and get a positive at cd11 and would wake up hungry like starving! So I was worried out by being late and now having similar symptoms but everything was negative. So given we just gave birth 7 months ago I wanted to ensure there was nothing else to worry about. And I let her know I got a positive opk on these two different dates ( they were like a week and half a part) I figured she was gonna say you probably just surged or whatever. But she said if I didn’t get my period in another week to come in and test ( I got thought like 2 days later) but then she told me that I most likely released two eggs given my opks and how far apart the 2 positives were??