Feeling like vomiting😕

Is it normal to feel like you need to vomit for a couple of days while on the Nexplanon implant? I have had unprotected sex a couple of times where he came in me & I received the implant on September 28th. I was wondering if this was part of the side effects because I’m really worried that I might be pregnant. I have not gotten to the point where I really need to throw up but it’s just a feeling that you know is there. Please help you &’ thank you so much !