@Coloma & @JLeslie are giving you good advice. I would add that prolonged pinching the bridge of your nose at the top just below eye level sometimes helps to stop the bleed while, of course, tilting your head back (be sitting when you do this!). It shuts down the capillaries.
A cursory look at your 14,000-odd responses here (in lieu of a chart) show complaints of double vision not long ago, and a spider bite. And weren’t you the one complaining of some kind of sleep disturbance last fall or summer? Something about awakening disoriented, dizzy, memory loss, or something like that? I was going to suggest that you not take any aspirin until you see a doctor as it is a strong blood thinner and will only exacerbate any bleeding you may be experiencing, but since you have have signs of spontaneous paroxysmal hypertension (comes and goes without apparent known cause), and a possible history of Trans-Ischemic Attacks (TIAs), or mini-strokes, I would advise baby aspirin, 81mg (enteric coated, if possible), one every morning only, until you do see a doctor which should be as soon as possible (If you have aches, pains, or a temperature, use Tylenol [Acetometaphen] or Ibuprofen for these—they won’t further thin the blood. If you are on blood thinners already, report this event right away. They need to bring you in for a Prothombin Time [PT], a little blood draw, and re-adjust your anticoag med). Give the doc your full history of these events and any others that may be related. Write them down, with approximate dates and how long each lasted, before you go. A full work up should take place, including a cranial MRI which should reveal any history of blockage which, in turn, should be of enormous concern to the medical team. A temporary, although prolonged, nosebleed due to a little aspirin is preferable to life, if there is any, after a stroke. Good luck. And absolutely no alcohol as the benificial effects are too unpredictable and the potentially harmful ones are many.