For the last five days I've had shortness of breath and chest pain on right side of chest. No leg pain at all and I had went to the hospital and they did a d dimer and it was a little elevated(I am pregnant though) cut off was .5 mine was .6 so not much at all.. And they did chest X-ray normal. And normal leg Doppler no clots there.. But In so scared that something is wrong. My pulse is also high at rest which really makes me more suspicious. But ER Doctor sent me home and didn't think I had a pe.. I don't know what to do