Post Removal- Nausea Feeling

I am a little more than 3 weeks post removal. I am anxiously awaiting my period...I had the IUD for 3 years

For the last two days I have a constant sick to my stomach feeling, just like I did during the initial stages of both of my children's pregnancies

Did anyone else experience this? I took a pregnancy test today just to make sure I wasn't prego....

I am paranoid not being on BC right now even though we are using protection, it is just not the same