Help with curing Contaminated Food

I just started playing, at level 4 or 5 now. But I have a problem...
My food is contaminated and so I can't rest. I have dropped all my food and bought all new. I have refilled my water bottle. I can sometimes rest once out in the wilderness, but then I can't rest again. I actually don't see my water bottle in my inventory. I remember filling my water bottle at a contaminated source, with the archers. But I can't find the water bottle in my inventory so I can drop it. Please help.
My food is contaminated and so I can't rest. I have dropped all my food and bought all new. I have refilled my water bottle. I can sometimes rest once out in the wilderness, but then I can't rest again. I actually don't see my water bottle in my inventory. I remember filling my water bottle at a contaminated source, with the archers. But I can't find the water bottle in my inventory so I can drop it. Please help.