 [ Symptoms ] how to gain weight back from unexpected weight loss also having fatigue and nausea  i have had an ongoing anxiety disorder for 3 years i have finall found a med combination that works for me venlafaxline and bupropion i had been on the bupropion for about a year before so one drug was new before i started this drug i started having unexplained naused food eversions and lots of fatigue i have dropped my weight from 105 to 91 pounds am a personal trainer just trying to put on muscle but nothing is helping i feel like im constantly forcing myself to eat hcg= neg tsh= normal [ Disease ] most helpful answer in most cases and with most antibiotics you will be fine your implanon  nexplanon will not become less effective here is a little piece i found for you from planned parenthood <link>