I Just Got The Nexplanon Implant On My Left Upper

I just got the nexplanon implant on my left upper arm approximately 12 days ago, and just last night I started having real pain around the insertion site and aching and unbearable sleep-like feeling in my bicep all the way down to my elbow as if it were falling asleep, as well as, for the last week and a half I have had partial numbess and tingling in my fingers, all on the left arm, and I cannot find these symptoms anywhere on the nexplanon side effect information site that was provided by healthcare physicians when signing my 3 year card. So, that being said, I am officially worried. I just had a baby boy as well the day before I had gotten the implant so I had been off the Depo-Provera shot for approximately 10 months before receiving the implant. Also, I don't know if it is a side effect, but I have throbbing pounding headaches to go along with it as well. Please help me find the answer to these symptoms!