Likelihood?

Katie
Had my period March 6th. Had IUD removed April 15. April 16-18 I had what I thought was another period. I'm just wondering what is the likelihood of me conceiving during this time? The doctor who removed my IUD kept pressing me to get plan b, but when I declined she told me to text in 3 weeks if I thought pregnancy was an issue. My finances best friends sister got pregnant the first month her IUD was out. What's your personal experiences?