Girlfriend problems

My girlfriend said she feels like I’m being fake to her. That I’m stretching the truth. And I mentioned that how am I being fake? All I’ve been doing is showing you love and being honest to you about everything about my day etc. she said like stretching the truth like a key that you asked if I had or if we still have bread at home, like you know the truth but you ask me as if you don’t already know it. I said I forget things, I forget where I put my wallet or even my keys sometimes. I’m bound to forget, I’m not asking you because I know you have it and I’m asking to see if you have or I said we have no bread left (she checked, we have like two slices left) to me that means we need to get bread. She says I keep lying and telling white lies even if they are small they are adding up. Or even that I told her I got home like 15 minutes ago and she said you texted me like 25 minutes ago you got home. It’s not like actively look at the clock, I gave a rough estimate. I need some advice. I feel like she may be taking things too seriously to the heart about these things and saying I’m being fake to her. I need advice on where to go with this.