I have ended up with two slightly different looking hydrocodone watson 853 pills. Both are white and oval but one is noticeably smaller by about 10%. Can they vary in size from the same manufacturer? I was waiting for a long time for the first package to arrive, grew impatient and ordered from another provider. Both arrived around the same time... I am a fastidious kind of guy maybe and I don't think most would notice this difference in size. But its bothering me. Could one of them be fake?