Women who post week by week photos of their pregnancy on Facebook. Would you find it annoying?

Recently, my MIL and SIL have started to ask me to send them week by week photos of my belly. I'm not a huge picture person, and I think posting these photos on Facebook may be annoying, especially when I have friends who are suffering from miscarriages and are on the TTC journey. I don't think there's anything wrong with a collage of the week by week progression, but do you think it's annoying to see someone post pics each week? Because I've only sent like one or two pics, my MIL is thinking that I am not enjoying my pregnancy, or that I somehow dislike her. I think I'd rather send month by month pics. (I'm on 21 weeks now). Thoughts?