Any one else been on implanon?

ok i had my implanon removed 2-14-11 aunt flo showd up on 2-20-11 she left 2-26-11. i had wit hubby 3 or 4 times b4 flo showd up after b.c. out. my uterus feels like i should b hangn with flo but im not. i hav taken 3tests since then. all neg. dnt know when flo is due bk she like 2 switch up but usually n the 1st 2 wks of the mo. we r ttc 3rd baby. i would like 2 know about anyone else that has been on implanon.