Is it bad for my baby if i got toxoplasmosis only a week before conception?

Yes: The risk of congenital disease is lowest (10-25%) when maternal infection occurs during the first trimester and highest (60-90 %t) when maternal infection occurs during the third trimester. Although the severity of infection worse when acquired during the first trimester.

Difficult to know: But if you had toxoplasma in your circulation the possibility is that the fetus was infected. Discuss this at length with your obstetrician and probably with your future pediatrician as well.