Toothache, causing headache on right side of head, sore spot, hurts when pressed, hurts my upper and lower jaw, serval days with it, last tooth, what is it?

Wisdom tooth ? It may be your wisdom tooth. To be correctly diagnosed, see a local dentist who will be able to actually examine you.
Many things. Easy = sinus congestion or infection, new filling done in area that is high in your bite. Hard = clenching, grinding, or combo of above. To rule out things I'd start with 600mg ibuprofen, stick to softer food for a few days, watch the area & if not better I'd see a local dentist to test & evaluate the area. No worries .