As long as you already sent in your email or message, you should get it some time in June, though I am pretty sure the way that it works is based on the DATE of your birthday, you and a group of others who have birthdays around the same date will get them all at once, so maybe the week after? I know mine was almost a week or so after my actual birthday.

You might be able to do a support ticket or ask one of the moderators directly if you want an exact date less