I hope its OK to post this in relationships when it is about a friendship. I'm hoping for some opinions or advice, in case I'm planning on doing the wrong thing/being petty.
Background (I've tried to keep brief but am also trying to give balanced story): I was very friendly with a woman, partly because her DH and I have been good friends since we were teens. My friendship with this woman became much closer than it would otherwise have been about five years ago as she was having some significant problems which I was able to help her with. Two years ago I began a relationship with someone she knew through work who I had met through her. I had qualms about doing this as I suspected she would find it difficult (the merging of two social worlds, partic because I had been a source of support to her in the past) but in the end spoke to her about it, went ahead with the relationship, thinking I could manage the situation sensitively and it would be OK.
I thought things were fine but it transpired they weren't. When I realised she was still not happy about it, I talked it out with her, made some changes in order it make it easier (e.g. did not talk about DP to her, did not bring him along to particular social events etc). Many of our mutual friends tried to help here too and tried to provide sympathetic ear. They privately said to me they thought she was overreacting (but I'm aware they may have been trying to make me feel better...) I felt very guilty for causing a problem although this was mixed with a sprinkling of wishing she'd make an effort to accept the situation, if I'm honest.
Fast forward a year or so, and I had become aware that she had been badmouthing my relationship and my OH all over the place, whilst also complaining I was being a poor friend to her and that I wasn't around for her as much as I used to be. I rose above as much as possible as I didn't want to make waves in our wider friendship group nor fall out with her DH.
I am now happily pregnant. Since I have been telling people this lovely news, I have found out that last year, this friend had been telling people that my OH had left his previous gf because she wanted children and he didn't, and that she had missed her chance to have children. (This was a lie and she knew it was a lie). I think she was doing this to turn our mutual friends against the relationship or give her an excuse to bitch about it. This past month it has been really horrible having to deal with friends say (gently, kindly) "and is [OH] ok with the pregnancy?" I'm possibly overreacting but it's really upset me, and I feel sad that my friends have been given false concerns about me and my life.
Now, I just don't want to tell her I'm pregnant at all. I know she'll find out eventually and I expect she'll get in touch to say she's really happy/congrats etc. I feel like if she does, I want to call her out on what she's done and tell her its the last straw for me.... that's petty of me though isn't? I'll just create upset when I could be the bigger person.... but I'm so cross and upset....I'm worried I'm overly hormonal and therefore making bad decisions!
Tell me what to do, please!
SORRY THIS IS A BLOODY ESSAY. Thanks for reading this far 