One thing with toxoplasmosis is that when you test, you test for a value or a titre which shows exposure or present infection. Did he say you were exposed recently? They can't really tell a date, but if you have a higher titre it would mean a recent infection or a medium titre meaning one in the past. I would definately get him to clarify this for you. Toxoplasmosis is dangerous to your baby, but not if you have been exposed in the past. So if you already have had exposure prior to pregnancy its okay now and nothing you can do can expose your baby to an infection now.

ETA: Have you had gastro recently? The symptoms of a toxoplasmosis infection are similar to gastro in an adult.

So I would definately ask him to clarify, in fact I would ring and leave a msg saying you are VERY concerned about the results and need some clarification. If you are in an infection at the moment, they would usually give you antibiotics to cover for your baby.

Liz - Toxoplasmosis isn't always tested anymore, but its one of the pre-pregnancy tests like rubella immunity that can be tested. I have had it tested both times because of being a vet nurse & having come in contact with toxo quite a bit in my line of work.
The signs of infection are similar to gastro.