I know just how you feel. Whenever something occurs and I am not here to control it, I panic the same way. Example, my husband and I don't leave my daughter's window open when she sleeps because the noises startle her. She was being watched by a family member, and sure enough, they left her window open. We never combined bottles of formula. If a bottle was running so low that it didn't have enough to make the bottle, we would just start a new bottle. How many times did I come home to, "oh, I didn't know" from family members. Or the worst was, "oh, I meant to tell you, our little baby was sick with a fever last week, but I'm sure he's all better by now. I meant to tell you before you came over!" Please don't panic, you're doing the very best you can, as we all are (I'm a stay at home mom too, except when I'm in school) and occasionally you have to trust people and hope everything goes o.k.. I'm sure your baby is fine (as my husband and my mom tell me all the time too). And, you know what, 99% of the time they are right.