"i have severe endometroisis and fibroids. recently i decided to use nexplanon. i was horrified because i do not like needles. the only pain that i experience was the numbing part with the lidocaine. that burning sensation i did not like. but once the site was numb all i felt was a tugging sensation. it&#039;s been three days since i&#039;ve had the implant, there is a small bruise nothing serious the dr. did inform me that a bruise would show. when i move my arm in a certain direction it does hurt but it goes away. the site is tender to touch but at least i wont get pregnant. i was previously on the pill so i am not sure if breakthrough bleeding will start now that i am on progesterone only birth control. praying no bleeding at all. so far so good."