Am I overthinking? Confused/ conflicted

I’m currently 35 weeks pregnant so maybe I’m being hormonal, but there is this woman that my husband knew prior to us getting together.

He has always been very friendly with her, but I just notice this aura around him and her. Whenever they bump into each other, his aura changes. He’s happy and almost seems excited to see her.

Her daughters and our daughters also go to the same school and she lives just down the street from us. Prior to us getting together, my husband and her would always chat together (this is before she separated from her husband)

Around that same time my husband and I got together, she separated from her husband. Fast forward to now, I get this feeling that my husband would have been happier if he gotten together with her instead of me. Yesterday was the school barbecue and he was just all wrapped into her and her daughters.

I’m afraid to express my concern as maybe he’ll just call me being insecure but there is a change in him when he is around her. There was a time I let a bit of emotion show when he purposely went out of his way to talk to her while we were driving through the neighbourhood and he made the comment that we would have problems if I was upset for him talking to her ( I honestly don’t have a problem with him talking to other women but it’s just when he talks to her, he seems like a school boy with a crush).

I don’t know what to do, there is a age difference between my husband and I, along with a race difference ( I’m Jamaican decent and he is Portuguese) and his preference in prior women has always been for blond hair and blue eyes. (Even throughout this pregnancy he always brings up what colour the baby will be or if the baby will have blond hair and blue eyes like himself and his daughter). Stupid things that bother me bc these things should not matter especially when he knows I have brown skin, black hair and brown eyes. ) this woman on the other hand has blond hair and blue eyes.

She is also closer to his age group so on paper she is much more financially stable than me and while yes I own my own house and his daughter and himself moved in with me, I still carry a lot of debt from school and being a single mom to my other two kids.

I also feel this pregnancy he did not want, he did make the comment he should have dated someone closer to his age bc they wouldn’t have been as fertile as me ( I’m 29 and my husband is in his 40s).

Ive been really depressed about this and now just feel confused and conflicted on what to do.