So I Got The Implanon In My Arm In December

So i got the implanon in my arm in December this is my second one after losing my baby when i was 30 weeks pregnant but i was having a period twice a month and now for the past week ive been super nauseous extremely tired headaches my face is breaking out loss of appetite and loss of weight i have random tense cramps in my vagina or stomach and i got heart burn some times in my throat other times in my stomach me and my fiance had alot of sex when i was "ovulating" but i know alot of times birth controls suppose to prevent eggs realising and meeting with sperm but could i possibly be pregnant or should i worry and go in to see a doctor right away i mean i did take 2 pregnancy test both came back negative but i know that the implanon can also effect the results. What should i do ?