When your friends start acting differently towards you...

Just curious if anyone else is having this problem with their friends. My best friend (at least I thought she was my best friend) has been acting differently towards me since I've been pregnant. While I know I'm going to have to confront her on the topic soon and hopefully it doesn't end our friendship since we've been best friends for the better part of 2 decades, the confrontation isn't the issue. I'm just wondering if my situation is unique or if there are other expectant Mother's out there that are having the same issues with their friendships. She's said some really hurtful things to me and has been exclduing me from plans (even ones we set prior to my pregnancy) ever since I announced that I was having a baby. We were supposed to take a weekend trip in December that included her & her partner, my partner and I and another couple, which she promptly backed out of when I announced my pregnancy in October. She stated that she didn't think I would have any fun on the trip since I couldn't drink, so it wouldn't be worth it. Yeah, that didn't go over well with me and I let her know it by saying I don't mind not drinking, I'm pregnant, not dead, and drinking isn't what the trip would have been about for me regardless if I was pregnant or not. She's also made some extremely rude comments about unplanned pregnancies (which mine was planned) and how children would ruin her life, blah, blah, blah. Now she hasn't answered my phone calls in 2 weeks, and I've been trying to get a hold of her since whe's the one who's supposed to be planning my baby shower. While I hope no one else has or is experiencing a similar situation, I'm sure I'm not alone. Just needed to vent to women that understand what I'm going through and give them a chance to vent back. Would love to hear from you ladies so that I don't feel so alone.