Worried as heck...

I went to my obgyn this week (12th) and informed her I had sex before the 6 week window was up (3 times, April 27, May 9th and May 11th), an the condom broke and he accidentally came in me the last time (May 11th), well I am supposed to be getting my IUD next week! But I’m worried if I have another possible pregnancy that it might cause issues. Should I wait to get it or what? My doctor made the appointment and her herself said there’s a chance I am, but I’m only 3 weeks pp. I have no idea what to do? I’m curious when I should test because I haven’t even had my first period yet.