"i have always practiced safe sex, but when i heard about nexplanon i was like why not.. it&#039;s good for 3 years, and better safe than sorry. i got it inserted 2 months ago, and after the 3rd week i started spotting (my normal period would have came a week after.) i have been spotting/ been on my period since then, so about 5 weeks now. the light spotting was no big deal, but lately it&#039;s been pretty heavy as to where i have to wear a tampon, a panty liner is not enough. i had a follow up check up a month ago, and the dr. said everything was good: my insertion spot had healed up nicely, and the spotting was normal. but how long is it going to take for my body to adjust to it!? "