Hello again,
I can perfectly understand your desire not to burden your partner in view of your medical history, but you must always remember, confiding in your partner does not put them in the place where you are - they hear about something which the don;t feel themselves, so don;t imagine you will be dragging him (? you don't advise your gender) down with you. Think of it like this - if your neighbour has a toothache, you will feel sympathy, but not their pain - you are not in there with them - it's an important point.
With regard to the 'pressure' - that is very much a part of your condition, and becomes anb ever-decreasing circle as you try to fight that feeling, as well as the condition that gives rise to it in the first place.
Recovery is possible - it just seems too far away and too hard to reach, and too exhausting to fight for, but getting the right help will start improvement almost straight away and give you the strength and courage to travel the road out of this darkness.
See your GP and be very very honest about how you feel, not only about your condition, but its potentil relief, and see what he can advise you. Please let us know how you get on.