thanks for your question.
If you could give us an address, we could look it up on a tangle explorer and see what you see in your wallet.
But it sounds like you’re looking at a transaction and its reattachment, which is a bit like a „clone“ or a „copy“ of the original.
Reattach is the process by which you "re-attach" your transactions to a different part of the Tangle, in the hopes of getting your transaction accepted.
As such, you are completely redoing the transaction process (tip selection and Proof of Work).
When you withdraw from an exchange, the exchange will take care of reattaching a pending transaction until it’s confirmed.
It could also be more than one or two reattachments if needed.
However, only one of them can ever confirm, the other(s) will stay pending forever.
So, if that’s what you’re seeing in your wallet: yes, it’s normal.
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