I am on a implanon and have been for 3 years. I just got married almost 2 months ago but about 3-4 weeks after our wedding night I have been having pregnancy symptoms. I have read that you can be pregnant while on implanon but want amother opinion. I have a hard shell with my stomach, nausea, fatigue, cravings, mood swings, I used to be able to suck in my stomach but no longer can, and had spotting for a little. I took some hpt but all were negative. Should I get a blood test or is it not necessary? And is there a difference with the stomach when sitting when pregnant?