Etonogestrel
"I've been on nexplanon for about 9 months now and at first I was happy because I didn't have to worry about getting my period, which is weird because most of the reviews I've read said women experienced bleeding for the first 6 months. Going into my tenth month however I've noticed some spotting and have been experiencing breast pain mostly my nipples have felt sore and sensitive. Also my mood swings have been out of control! I feel so bad for my boyfriend for putting up with them. I get so annoyed and irritated easily. As far as the weight gain, sad but true I have gained about 10 pounds which I'm not so happy about but rather be 10 pounds heavier than being pregnant."