I'm not receiving my conformation code from instagram

I forgot my password to instagram and ive senta a code to my icloud email and its not showing up in my inbox. I've checked all of the folders and other accounts to see if it went to them but it did not. i logged on to a browser on a desktop computer and I still have not received an email form instagram. I dont know if its instagram or my email. on instagram it notifies me (on my mobile device and my desktop that it was sent to my email and i never received it.