HELP!!!

I am 21 years old and I have 2 kids. 3 year old and 1 year old. I've been with my bed for 5 years and we are living together. I was not on birth control when I first got pregnant and after birth I decided to go on the Nuva ring. I liked it because I had the option to skip my period but I felt weird changing it. So I decided to go on the IUD (Mirena). I had real bad bleeding for 2 months and it came out. I thought the doctor had putted in wrong and that's why I had so much bleeding so I went back for another one. I had the same bleeding for 5 more months and I finally stopped but a month after I found out I was pregnant. Baby number 2 was on he's way and there was no IUD. So after giving birth I decided to get the implanon. It's been 2 year and a half and my periods are really bad. I us ally bleed for 10-14 days every 3 weeks with bad cramps. I recently found out I have an ovarian cyst and I want to get it removed. But I don't know to what...I don't want any more kids. I also noticed my sex drive is really bad with birth control.