"my 3 year nexplanon expires this february 2016. 25 y/o i got it put in a month after my twins were born not sure about my post pregnancy weight but i averaged about 130-138. first year no periods really but my breast were flat!! i thought it was from breast feeding, but my gyno stated it was probably caused by the progesterone after the first year or so they did &quot;plump&quot; back up. i had mood swings, dry hair/skin, moderate acne. never extreme bleeding. antibiotic&#039;s would often time cause my period to start. period became regulated right in the middle of the second year and i was able to track it. i developed cyst inside of my ovaries that became quite painful but reduced in size on their own. increase in yeast infections, vaginal dryness."