I am 19 weeks pregnant and I have been suffering from sever nausea and vomiting (lost 5kg in a month), headaches, chest pain that is so severe it makes me cry out in agony and pain in the left arm whilst having chest pains. I have been in hospital for 4 days and they don't seem to know what is wrong with me. They have given me a chest x-ray and checked for blood clots in my legs. I have + protein and electrolytes in my urine. I am having a VQ scan tomorrow to rule out blood clots completely. But if it isn't a blood clot what could it be??