Late Period

Okay so I had the hormonal birth control Implanon in my upper left arm for about two years. I got it removed on 8/28. Since then the hubs and I have been using condoms. But not very regularly. I haven’t had a period since I’ve been off the hormonal birth control. My doc said that I could have a period as soon as the next day. I’m getting nervous that I haven’t had one yet and I’ve taken three pregnancy tests that have all been negative. Anybody have any advise or insight. I’m slightly a hypochondriac and I’m terrified that I’ll never have a period again.