Bridezilla vent

So my best friend of 10 years is getting married. Im a bridesmaid, her maid of honor is her sister. It has been cool up until these last few months. Last month she told me I wasnt allowed to get pregnant i got pissed but brushed it off. This last weekend she told another bridesmaid that I'm not allowed to get pregnant and that other girl tried saying that since I can plan it (we have to use a sperm donor) that im definitely not allowed to have a baby this year. I'm pissed that the my supposable best friend thinks she has any say in this. We have been planning on trying middle of this year not that its their business but now I worry that if it does happen they will all resent me. It took me 2 years to get pregnant with my son so I'm not planning on delaying. Just upset with all this crap. Dont think I want to do the bachelorette party and I'm debating if I even want to be part of this wedding.