Very Confusing!!!!!!!

I can use some tips,I only have one friend after having kids and she’s going through infertility and she’s really sensitive when it comes to babies which I totally understand so when I was pregnant with my first she thought she could be pregnant so I told her to take a pregnancy test she was also late,she said it came back negative I told her sometime it takes time for it to come out positive and I guess she misinterpreted it in the phone thinking I said you are pregnant or something she later began having some bleeding and cramping and from then on thought she had a miscarriage and I feel like responsible for that I asked her later on how she thought she had a miscarriage and she said well you told me I did but that’s not what I said at all it’s been 2 years and she had told her family she had a miscarriage and I feel like I’m a terrible person for putting her through this pain and I’ve tried to tell her I never said such things but right now she’s going through infertility and is very emotional and I feel she might respond upset since she seems to get upset every time I talk about my girls but I mean they’re a big part of my life and maybe I am being inconsiderate but I don’t know? How would you go about this? She my only friend I’ve known her since kindergarten now we’re both 23?