late period but IUD problem

Mesa
I had my IUD removed on the 5th of July, I had a period on the 7th-12, I took a pregnancy test 1 week ago and it was negative, but I've yet to start my period, normally a couple days before my period I have cramping and I have none of that right now but breasts are beyond tender. 
Questions
Should I buy another pregnancy test?
Does anyone else have experience with IUD removal?

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