I Had Surgery For A Torn Meniscus About Two And

I had surgery for a torn meniscus about two and a half weeks ago. Now I can not take a deep breath. I went to my doctor and he took a EKG and then he sent me to the hospital (to rule out a blood clot) where they did another EKG Interp Only, Auto Diff, Basic metabolic panel, CBC and differential, D-dimer, quantitative, ECG12 head, glomerular filtration Rate GFR and 2 chest X-rays. The results were: blood pressure higher than it should be and Dyspnea. I went back to my doctor the next day and he told me that all testes came back normal. However, I am still having shortness of breath, very tired, and just not feeling well. What else can I do? Is there a specialist I should go to?
My e-mail is Barnone26@aol. Also, I am a 63 year old woman - 5'1" about 130 pounds.