I keep wanting to recheck and recheck the same thing over and over again even though I know now that it's all good ugh

What did I do if I really want reassurance

I keep asking for reassurance( which I know I should not do) and when I get the reassurance I want I don’t believe them and I keep asking again and again and again Basically I thought I did something today and my sister was there and I asked her and she said no but I keep asking her because I keep thinking I did this thing. She said she was right there and she saw and nothing happened but I seem to think that maybe she missed something and blah blah blah. My anxiety is even worse now about this topic

Hi i need help as im checking things over over as in doors cooker switches taps etc