Had anyone had this problem before ?

T

So I got my uid taking out on july21st 2017 and I was supposed to get my period 5 days ago. Three days ago I did a pregnancy test and got a BFN 😭 and we've been trying ever since I got it takened out! I need help! My period was never late!!!!! Never or irregular! It's also been on time! Should I do a blood test or just wait ? Or could I be late from taking out my uid ?