Firstly, IgG positivity indicates past infection and does not need treatment as long as IgM is negative. You will need to go for IUI. Chances are better if ovary on side of healthy Fallopian tube has ovulated. However, ovum migration to opposite side is known, so IUI can be carried out in both cases. Get
HbA1c done. That will decide if you need medication. In case you are overweight, weight loss will help