Usage of 'over'

[Daemon99]

If somebody asks me when my birthday is, and if I want to tell them it's already over, how can I put it?

Can I say in any of the following ways? (by the way, is this sentence correct?)

1. It's over last week
2. It's over. It was last week.
3. It's gone/gone by

Can someone please help me with this?
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Non-native speaker of English
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I intend to live forever - so far, so good.

[Pyramid]

Seems interesting! I'll post mine, see if they are correct.

xxx days/weeks ago was my birthday.
My birthday already passed xxx days/weeks ago.

[Jamie (K)]

You can say:

1. It was over last week
2. It's over. It was last week.
3. It's already over. It was last week.