My sister has had a PE (she is 24). She is on coumadin and lovenox when the coumadin isn't cutting it.
Have you been to see a Hematologist and a Pulmonologist? You NEED to see both, asap. My sister has a blood clotting disorder, they have known this for years (Leiden Factor 5 mutation in her case). My mother has it and when she was diagnosed, we got tested too. So my sister is already under the care of a hematologist. He referred her to a pulmonologist. Have they done a FULL screening on your blood to search for any and all blood disorders (its like 20 or so vials of blood then take, or it was when I did it)? A hemo should insist on that first thing. A regular primary care doctor does not have the specialty training so you really need to have a regular hemo now. My sister just has periodic appointments with hers unless something is going on.
I believe my sister said it was about a month for the shortness of breath and dizziness to go away. I think that partly depends on the size of the clot. The knots in your stomach are normal. You won't cough up blood. In fact it can take a long time to dissolve. What they told my sister was that the blood vessels in your lungs can actually re-route themselves around the clot.
One more weird question for you. Have you been to the desert anytime recently? My sister had what she thought was a second PE (and was understandably freaking out) and it turns out she has Valley Fever. This is a weird fungus from the sand/dirt that gets in your lungs that can feel similar to a PE and on chest scans will look like dark patches on your lungs, like tumors almost. The only way to really diagnose it is to do a blood test or something specifically for it, and most docs have never even heard of it because it only happens in the desert. So they don't test for it. When my sister got her chest scanned it looked like she had huge dark patches all over her lungs. Fortunately she knew about it to mention it to the pulmonologist. The only reason I bring it up is because if you had been to the desert and picked it up, chances are no one would think to test you for that and you could be getting misdiagnosed. But I don't think it exists anywhere else, so if you haven't been there, it shouldn't be a concern. There is treatment for it, and I believe my sister's most recent check up shows that her body has fought it off on it's own.
I'm so sorry you've had to go through this. I know it must be so scary for you. And all the follow up care is no fun, but just remember you are really really lucky you went in and it was caught. I wish you the best!