Hi, don't know where to vent?! please read 😘

💗louise💗 UK • Mummy to 1 prince and 2 princesses 💙💗💗 pregnant with our 4th little one our 2nd boy 🥰💙👶🏻 due January 2020
Hi, I found out I was pregnant on Wednesday and we have been trying for our 3rd for 10 months so I was so excited also a little shocked to find out early at 3 weeks 3 days! 
My friend who just decided to start trying for her 5th her youngest has just turned 1 and her 2 older ones she gave away because she couldn't cope has basically stopped talking to me. I thought we were close she knows I have been trying for 10 months and she's been trying for about 2 months. She's horrible to me when she phones me and when I told her i was off to get my bloods done yesterday she's not even messaged me to find out how they went etc. I made an event on fb in January for march for my birthday meal out and she ticked she was going and now yesterday has changed it to can't go. She also rang me the day after I told her I was pregnant saying she wonders if she has cancer and that's why she can't get pregnant again, so I just let loose and snapped saying you haven't got cancer you would know if you did (I went mad because my poor dad has had cancer twice and I don't like the word cancer being thrown around lightly)! I classed her like my sister/best friend and she's basically being a bitch! I don't need the stress of her! So do I just block her and not talk to her or have it all out with her why she's being like this (even though I know why)?? I always worry in my first 12 weeks of pregnancy and don't need her stress on top of it all! Opinions and answers please if you have time?