won't stop bleeding

Dianne
I got the 2 year arm injection birth control nexaplonan (I think that's how you spell it lol). Well I got it in November and my doctor said I could be bledding for up to six months it's month 4 and I bleed most of the month. There's like 3 days I don't. Anyone have this birth control? And if you do how long did you bleed??