There is no point in getting tested again in August. If the IgG is going to pick up an infection, it will do so within 8-12 weeks. Do another one now if you wish, but I’m guessing it will be negative or equivocal now and then put it to rest. If you still have anxiety about this of want more confirmation, you could do the western blot but I think you are probably just fine. The test results are going in the wrong direction to suggest that you are truly positive.