baby shower question

Alright so I bought a pair of really cute shoes (heels) for my baby shower on the 25th of June from target BC I thought I'd be OK but with the extra weight I don't think I'll be able to handle it. So the issue is I bought the shoes a little over a month ago online and ended up throwing the packing label (receipt) away and I went online to print another but it says it has no record of that order. Yet I have the email...so do u think I'll be able to go to target, show them the email and get store credit AT LEAST ?