"i got the nexplanon placed in january (3 months ago). the first two weeks, i bleed extremely heavy. so heavy i would bleed through a tampon and a pad within two hours. which my doctor said was very normal for this bc. i have been on almost every bc and there are positive and negative thinking this one. i truly forgot about it being in my arm, but the non stop bleeding for me was the worse thing. i would bleed like a normal period for 7-10 days, heavy (which i have never in 27 years of life had a heavy period).  then i would spot for a few days, stop for two days, and start bleeding heavy again. i also notice if i tried to have sex in the small window of no bleeding i would start bleed right after intercourse."