Hi, I have been on nexplanon for 3 yrs it expired on 5/14/17, I have not yet had it removed as of 6/15/17 and am wondering if there is a possibility I could be pregnant, considering that I ve nerve missed a period while on nexplanon, I ve had irregularity but never a missed period, and as of now I have yet to have a cycle for the month of June 17.