Side Effects of no longer using birth control

Maira
Hello. I removed my Skyla iud September 24th. I had just finished my period. Before then I was on the pill. This is the first time in 9 years that I haven't been on birth control. 
Well my period hasn't come yet and I hear that is normal? Is that true. I've also noticed other symptoms like mood swings. When will I be back to normal? Has anyone had this experience?