HELP! mirena and period!! πŸ€·πŸ½β€β™€οΈ

Regina β€’ Law Enforcement Wife πŸ–€πŸ’™πŸ–€
Okay, ladies! I had my mirena removed on 5/25/17 after having two since my son was born almost 10 years ago. I know it's only been a month but I have been reading up on woman not having their period for years. We are TTC and I'm so paranoid I'm not going to be able to get pregnant, especially, if I don't start a period soon. Please help with any advice.Β 
FYI I took a pregnancy test this morning it was NEGATIVE. 😒
Thanks!! πŸ™πŸΌπŸ™πŸΌ