Possible pregnancy on the Implanon? Anyone else who might of had a similar experience?

I have a 16 month old son, since my son's birth I immediately got my chip inserted and never had my period since not a drop of blood...

I'm abit concerned because Iv been active with my husband and now I have sensitive boobs not the pain or heaviness but extremely itchy that's th only symptom, it's difficult to even track any conception because I have not had a period since...

What do you ladies think 😬