i currently have been having very high blood pressure and heart rate - example: 189/166/112. also having very bad headaches, nausea, constant urination and defecation - and sometimes its very loose and watery - flushed red face, tremors, extreme hunger and shakiness, chills, weakness, extreme dry mouth and thirst. I doubled up on my blood pressure medicine, 25 mg Losartan - took 2 am and pm, instead of 1 - it didnt help very much at all. walking usually brings my blood pressure down but now it makes it go up higher. my doctor thinks its dehydration and told me to drink gatorade. i looked up dehydration online and it says dehydration makes blood pressure too low. what do you think?