Multiple. Swelling especially in the hands/face, headaches, blurry vision, nausea or vomiting are warning signs. If you have any of the above symptoms - see your doctor right away. Your doc will check your blood pressure & your urine for protein to check for toxemia (preeclampsia, pih-pregnancy induced hypertension). Straight to l&d if you have abdominal pain (esp over your liver), vision loss, or seizures.
Toxemia Symptoms. The classic 3 signs of toxemia (or the medical term preeclampsia) are swelling, high blood pressure, and protein in the urine after 20 weeks of pregnancy. Other signs can be headache, visual changes, nausea, vomiting, and right upper quadrant abdominal pain. Since symptoms are somewhat subjective and can be normal pregnancy symptoms, they should be discussed with your doctor for further evaluation.