I took birth control pills for about a month after not being on any birth control for 5 months. I have always had bad cramping and heavy periods with the pills so I knew it was only temporary. I decided to go with the nexplanon because I had previously been on the shot for two years and heard it was similar. I got it put in on Tuesday, no problems and barely felt a thing. However, since then I have had an extremely heavy period and very bad cramps that neither ibuprofen or prescription medication seem to help with. Before getting the implant I had a light period and bad cramps but I associated that with the pills. I'm concerned this bleeding is going to last for a really long time and want to know if anyone has had a similar experience.