was I insensitive??

Hey ladies! i need your advice and opinion on something that has bothered me for a while now. especially interested in the responses of those who have struggled with brimming pregnant. I started volunteering with our youth group at church and had a co-leader whom id never met before. id heard great things and she seemed very very sweet. I really wanted to be her friend. after months in the program, i learned through our sharing in small group that she has really struggled with becoming pregnant (a few years i think) and has had an early miscarriage as well. i have a little bit of a social anxiety so I go over what I want to say a thousand times and even sometimes rehash what i say outloud to myself to make sure it comes across the right way (i know, its crazy but its helped over the years) so I really wanted to encourage her. I had yet to struggle in that department, but my sister had a similar story. so one night after group, we were talking and I said, "you know, (lets say Sara), my big sister struggled to become pregnant for 3years. she is the most christ-like person ive ever known. she almost became a nun, but decided not to on the single fact that she felt she was called to be a mother. so you can imagine how dissheartening it was when they couldnt, but you know her day did come. she had my nephew. and then 2years later another boy. then by accident 6mo later she became pregnant with my neice. it all will happen in Gods time. we have to have faith in HIS plan for our lives. He is for us" flash fwd a cpl weeks and her husband is giving the sermon to the youth and he brings up their struggle and how he cant beieve how some ppl can be so insensitive to their problem. like when they say, "i know someone else whose struggled and now they have 3kids!, etc" I was devestated. i felt terrible at first, but then confused. then angry. like i had the BEST intentions and was trying to use a personal experience to relate and encourage her too keep faith! how is that insensitive?! Even now almost a year later, having struggled for 5months (i cant even fathom 3years) i still dont think what i said was mean or insensitive! also if it was, why didnt she pull me aside at some point amd say like I appreciate you so I want you to know how that staement made me feel? instead she smiled and thanked me, later complained to her husband about what i said and got so worked up they had to talk about it during the sermon and just ruin me. i was so embarassed I never talked to her again except for normal pleasantries. if you think what i said is insensitive, can you explain why? and maybe what i could have said or what you've liked to hear from friends. thank you!