My aunt adopted my daughter 26 years ago....

My aunt adopted my daughter after I had her for 6 months. I was 15 years old. It’s been so hard all these years not knowing my place with her. She’s known I was her birth mom since she was 4 and I’ve always been actively involved in her life but it seems to me, it’s been in the background. She recently was married and I was ushered down the aisle before my aunt. She is now pregnant and so many emotions are back and it’s mass confusion on my end. We are more like friends. It’s hard to be close to her because of my jealousy towards my aunt and uncle and cousins who are now her brother and sister. I had two more daughters after her. I’ve always been confused about saying I have two daughters or three. If she ever heard me say I only have two daughters, she would be like ‘excuse me?’ She is really close to my sister as well and of course that hurts as it’s not me and I don’t know how to feel. I’ve never met anyone in this same situation therefore no one to talk to that understands. I always feel weird when I’m talking to him and have to say something like “does your mom know” when I know I’m her mom. Her real dad came back in the picture when she was around 9. When she was 17, he sent me this email apologizing for making me go through this alone because his heart broke for me when she introduced me to her friends as her “birth mother”. It always hurts and I’ve never been sure how to feel. I’m a family law paralegal and this adoption was the reason I went into this field. I could have never raised her and her have the life she does now. I don’t have regrets about the adoption. I guess I do at times. When she called to tell me I was going to be a grandma again (I have a 2 year old grandbaby from my oldest or middle daughter??? Never sure how to say that) Now I find myself wondering how this is going to go. I should add that my aunt was my mother’s best friend and my mom was killed 15 years ago. My daughter was my moms spoiled angel and while my mom was here, she somewhat understood. I’ve never reached out on anything like this. I’m wondering if there is any other woman in my same situation and can relate? I never thought to look for groups until today.