11 weeks today and went window shopping

Katie • Expecting my rainbow baby Jan 2017 ❤️
I heard the heart beat on the Doppler this morning. Have my 12 week scan Thursday. I really want to start buying stuff. Do you reckon I'm ok to or do you think I'll jinx it? I just made a huge list of all the stuff I think I'll need. Also I fell in love with this pram