I had a period on February 14th (first one in a year) because I am on Nexplanon. I took an ovulation test 2 weeks after and I got a positive LH test for ovulation. I thought Nexplanon would take care of it so I still had unprotected sex with my boyfriend. Could he have fertilized my egg and it just didn't implant or could I be pregnant..? When can I take a pregnancy test? I did not get a period this month after the last random one. What do you think..?