Hello I Have A Quick Question About The Implanon .

Hello I have a quick question about the implanon . My friend has one in her arm since about September but a few weeks it snapped in half she went to a clinic and said a pregnancy tested positive but today she searched online and found some information saying that it could be a possibility of her not being pregnant . I was just wondering if it's possible she is.....The implanon is still in her body and is completely snapped in half...she's going to get blood work done to see if she's really pregnant but I wanted to come here to see if you guys knew anything about to get an idea if everything