 [ Symptoms ] does implanon affect accurate test results for home pregnancy tests  i have had implanon in place for almost 4 yrs i have recently experienced pregnancy symptoms and hardening of my somach taken 2 tes and bot were negative still unsure completely tho can the implanon affect an accurate test result from home tests and should i see my doc to be sure about whether or not im actually pregnant [ Disease ] see your medical provider implanon should not interfere with a home pregnancy test but this type of hormonal insert can cause certain symptoms not sure what pregnancy symptoms you are experiencing but a hard stomach is not one of the side effects there are more accurate lab ordered pregnancy tests since this appears to be a major concern your medical provider can order one of these tests and of course examine you if necessary