###Human: Will positive Toxoplasma IgG result in miscarriage? ###Assistant: Hello. We consider toxoplasmosis when IgM are positive, it meas the person has an active infection. When IgG are positive, it means you are protected from future infection. Your wife is in her first week of pregnancy, so spotting is a common finding due to implantation. Vomiting is also common until 12 weeks. She does not have to worry about it. She can try small frequent meals, baked bread, etc. I recommend an ultrasound at five or six weeks to evaluate the well-being of pregnancy. The symptoms that you prescribe does not mean that it will be a future miscarriage. It is common in every pregnancy. If this pregnancy terminate spontaneously, then after that you have to perform several examinations. But I recommend you to be positive. Ultrasound scan.