There ' s a theory about this . I believe it ' s called the Threshold Syndrome or something similar . Basically says that as soon as you walk into a different room for any purpose , there is so much new information to process that your brain immediately jettisons your silly reason to focus on your new setting . LOL , when this happens to me aka constantly , I try to look around for something to do say , pick up something that ' s on the floor , put something away properly , etc and stall for time until I remember the real reason I walked in the room . That way , I wasn ' t really forgetful . Hahaha . ha . <| sep |> lmao , this needs to be sidebar ' d permanently . <| sep |> How many you want <| sep |> I asked a friend of mine and who still has the nexplanon , she said she had some random sharp pains the first week but she ' s had it for a few months now and hasn ' t had them since . She also loves hers and had little to no issues so it just goes to show everyone is different