I had done some shopping elsewhere before going to Portswood Southampton Sainsbury's, so I entered the shop with 1 full bag of shopping bag. I had items to collect from Argos, so now I have 2 bags of shopping. I went into supermarket from Argos, woundered around, I couldn't decide what to get for dinner. I needed to use toliet so went there then went bk into shop. I did notice a female member of staff looking at me weird when she past, I just thought what's her problem. Once I decided what I wanted I went to self-service checkout. On my way out i was stopped by security, asked to see in my bags. He said it was abit strange I'd done my shopping then went back in. Then the female member of staff who past me earlier came running over. She must of been very disappointed as I had all receipts for my shopping. I know stealing goes on in supermarkets BUT your members of staff need to get facts right!! I was horrified, very upset