I have been extremely tired for just over 4 weeks with very swollen feet for three days,

I have been extremely tired for just over 4 weeks with very swollen feet for three days, aching legs for a week, and pains in my chest - and stomach is swollen too. My heart is racing itself up to 120 bpm and my BP is between 120/77 and 143/98. I have seen 3 doctors. I have had blood tests for thyroid, anaemia, diabetes  and cholesterol - all negative - and an xray - but have not yet had the results. I am scared as there does not seem to be any communication between doctor and hospital and I don't feel there is any continuity of care. I am 44 and have lead a sedentary lifestyle for a number of years following symphisis pubis dysfunction during my last pregnancy 7 years ago (limited mobility has lead to becoming overweight by 3stones)My diet is very healthy, Meditteranean / 50% vegetarian. I don't smoke and only drink on special occasions - 4 times a year. I am experiencing dizzy spells and headaches and am now beginning to suffer with stress. Help would be appreciated.