I found out that you could mail order things from Walgreens and pick them up from their stores. So I was planning on buying some Tena Super Briefs from them, but I have a few concerns. First is regarding size. I am a 32 but they say the smallest size is 34. Would they be too big on me or would they be fine? Also I have never mail ordered anything, is it anything I should know or is it pretty straight forward? And how long does a delivery usually take?