Hey girls! So I just bought my first pair of danskos yesterday. My shoe size is usually an 8. I bought a 38, felt good in the store. I can fit my pointer finger in the back and the back of my foot moves out of the shoe when I walk. The thing is the top of my feet are killing me now. At the top they are tight. Should I return them and get a 39? I tried the 39 on, but they seemed too big, but now I don't know! How long does it take to break them in?