I left my 5 month old with my mil today for the first time. Me and my partner went shopping as mil has a broken foot and is house bound for a while so we thought it would be nice for her to have his company. I was nervous and I didn't want to leave him and I felt awful but I trust her obviously, she's my mil. Anyway, she fed him 7 oz whilst we was out and I thought nothing of it. She's had 2 kids I assumed she knew. We got back and my son started grizzling, so she made him another 4 oz. I heard her shaking the powder with the formula but then she came straight back in and gave it too me. It was cold. I then had bad pains in my belly after I realised she hadn't boiled the kettle and hadn't done for the feed that she'd fed him whilst we was out. I didn't say anything but when we left, I told my partner we wouldn't be leaving him again. This is the type of thing I was afraid off. I love my mil and I trust her so much but this is why I didn't want to leave him -not with her, with anyone. He's had about 11-12 ounces with cold water, will he be okay??