I'm 23 weeks and have been seriously nesting and cleaning like crazy for two weeks now!

every since I found out I was having a girl at 10 weeks I've been getting things here and there but I really started at 5 months

I had everything I needed except for hooded towels and bathtubs by 20 weeks. You do it at your own pace, don't let anyone tell you when you should do it. If you wanna do it then do it girl!