That is truly amazing!!! I forget the odds of that but very rare! So excited for you! You will love having twins and your twins will be best friends. I wonder if they are identical! Would make them even more rare!
I have an identical twin sister. We were conceived naturally and my m only had one ovary. We were triplets but our triplet didn't make it. Back then they didn't monitor mothers the way they do now. My mom didn't officially know she was carrying twins until she was 6 months along! She tried to tell the dr there was more than one in there. Lol
Anyway enjoy it. My sister and I are best friends and inseparable. Believe me growing to there were many days we hated each other but now our relationship is better than ever.