periods on birth control: nexplanon

Yasmine
Hey everyone! I am in borth control. I have the implant kind called nexplanon. I got itimplanted in January got first period in late march and it lasted about 8 days and was kind of normal. I had cramps for about 3 days the blood was darker than usual but it ended completely. I got my next one a few weeks ago and it has not stopped. I am really worried. I thought it was done about 11 days later then I kept spotting then I started another flow and then spotted and yesterday I got a heavy flow along with some serious cramps. Should I look into discontinuing this method of birth control or should I wait it out more and see if ir calms down eventually? Thanks