Dust/pollen allergy, face constantly swollen, what should I do?

I have been suffering from it for over a year, and got treated for conjunctivitis, then it was discovered that I was allergic. I was tested, it's allergy to house dust and pollen. The doctor prescribed me the pills, and I made one round of allergy shots, when they inject you with congealed pollen and dust. They said that if I do it several times every 6-8 months, I would be better. I am about to have the second round in one month. Meanwhile, I made my apartment dust proved as I was told, removed the carpet, wash the floor with a wet duster every day, and so on. I do not use/touch everything with pollen, including flowers and cosmetics. The problem is, I can't eliminate everything, for example, yesterday I touched a really dusty can in the supermarket. When I get exposed to an allergen, my face starts swelling, from my eyes down to cheeks. I become really puffy, and my eyes disappear. I take pills, but they do not help me at all. Together with my doctor we went through a selection: altiva, allegra, claritin, loratadin, cetrin. They do not stop swelling, and they do not make the swelling to disappear. I am forced to wait till it goes on its own. I can't open my eyes properly, and I look really scary and can barely go outside. Are there pills which target this swelling? I read about epi-pens, but maybe it's too extreme? I am not in shock, I am just swollen around the eyes and cheeks every day of my life. What should I do? And I do use eye drops for allergy, but they do not help me either.