I've been prescribed antibiotics for 1week and ppis for 2weeks for h.pylori. shouldn't it be the same? do i take both for 1 week or as prescribed?

Reasonable: Without knowing which medications you were prescribed, there is supportive data looking at a course of 7 day therapy with lansoprazole (prevacid), amoxicillin and azithromycin for eradicating H. pylori. The standard had been to use 10-14 days; certainly over the shorter courses .e.g 5 days as there were better results. I suspect that the PPi is for longer on account of allowing healing of ulcer