IUD switch

so today I got mirena removed and Skyla put in 
possible stupid question but I knows sperm can live inside the Vagina up to a week after sex. 
obviously my boyfriend and I had sex last night and I went to the bathroom after and this morning I was running late to the doctors and didn't get to shower so question would be since I got the mirena out and a new one in could I possibly get pregnant? 
doctor told me to wait 3-5 days before sex to  have my body adjust to the Skyla