I have heard it is possible to have pregnancy symptoms I will try and make my situation short if possible. I've had the nexplanon inserted for 5 weeks I had sex the first time while on the implant no condom 12/21/14 and immediately after sex I had began spotting to what turned into my period which I have been on since although now it is pretty light it's still their. Other than that I was fine till yesterday me and my uncle ate someone and after he wasn't feeling that great either ( upset stomach) but now I've puked 3 times and have headache he had none of that when telling my mom she said you better not be pregnant which got me thinking.. I heard you can get pregnant symptoms but can up it cause you to puke? Anyone have anything similar.