When to start a nursery


So i am 15 weeks about to be 16 weeks pregnant and I have my gender reveal next weekend and I was thinking to get my nursery ready right after. I know it's early but I don't want to have to do it when I'm 30 weeks ya know , and I know most people have there husband/bf do it but it's just me and I have no man in my life rn . Should i do it now or wait and I have to paint the room as well is that safe . If not any suggestions on what I should do ?