Baby Shower Questions


So I am 20 weeks pregnant as of today and no one has mentioned throwing me a baby shower yet. I'm not sure how to handle this. I have an 8 year old daughter so it's not like I have anything for the baby. We have been buying small things here and there but nothing major yet. I really want to have a baby shower but feel like it's kinda rude to ask someone to throw me one. So, do I ask my mom or MIL about it or just keep my mouth shut and plan my own baby shower??