Travel after receiving greencard?

Hello everyone! I recently got approved for my greencard. Thanks to everyone for the good wishes and the congrats!

My question now is. If I receive the card this week. Can I travel right away? Can I buy a ticket for the next day and visit my country (Colombia)?

Or do you think I should wait to travel?

I still can't believe I got accepted. This seems surreal! I am afraid if I travel too fast something might happen.