Period or implantion

Danielle
I got my birth control rod out on April 6th the Dr didn't say how long my body would take to go back to normal just said r u ready to go home and start to try for a baby well a couple days later after constant sex I started bleeding like a normal period but it only lasted 2 days and hasn't came back since but now I have a huge appetite like never get full and got heart burn and small cravings