The other thing to do is to wear them indoors. Go up and down stairs, and generally just allow your feet to get used to the new sensation. Boots are much more supportive than the majority of shoes and are likely to be heavier too. Sometimes it’ just about getting used to them.
As long as they are in sellable condition, have not been worn outside and are within the agreed returns period you can change your boots, no problem at all. For more information you can visit our returns page.
If you can go around the house for an hour or two without any rubbing or pinching, then the chances are the boots are a good fit.