<s>[INST] hello i had the new implant put in my arm end of may and did not have a period till september and then i have only had a couple and its been very light for a couple of days. but i have a interest in new foods and i am slowely putting on weight but i am trying to lose it. i get a sick feeling every day but have not been sick. do u think i am pregant or is it just the implant? thank u [/INST] Hello what, and I hope I can help you today. The contraceptive implant is actually one of the most effective birth control methods available, and has a lower failure rate than even sterilization.  Unfortunately, it is also very common to have irregular bleeding, mood changes, food cravings, and weight gain as a side effect of the hormones in the implant. So just in case, I would perform a urine pregnancy test to make sure that you are not pregnant, however the most likely explanation for your symptoms is general side effects from the hormones in the implant. Most people eventually stop menstruating completely with the implant and have minimal hormonal changes, but this may take 6 to 9 months to develop. I hope I was able to adequately answer your question today, and that my advice was helpful. Best wishes, </s>