Hello, I about a month or two ago I switched from the depo shot to the implant (birth control). An about a mother ago I was sexually active. Now I am having symptoms of being extremely tired, extreme change in appetite. I'm not hungry. It's just like my body is craving it and I have to eat and eat and eat. My breast have seemed inlarged/swollen and my nipples occasionally turn a purple/purple tint. I have also stopped spotting which the implant caused occasionally. Is this just my body finnaly getting used to the implant or could I possibly be pregnant??