I just read about toxoplasmosis. It is caused by a parasite that may be acquired by contact with cat feces or raw meat and transmitted through the placenta. Here is some nurse teaching out of my textbook:
cook all meat thoroughly, wash hands and all kitchen surfaces after handling raw meat, avoid touching the mucous membranes of the eyes or mouth while handling raw meat, avoid uncooked eggs and unpasteurized milk, wash fresh fruits and vegetables well, avoid materials contaminated with cat feces such as litter boxes, sand boxes, and garden soil.

I'm sorry for your loss. Give your body time to recover from the last pregnancy, and it'll happen again. Stop trying so hard to get pregnant. It always happens when we're not expecting it! Good luck!!!