your DS probably just sensed that you weren't yourself & was worried. you did the right thing because you recognised that you weren't feeling right & you've taken steps to rectify it. letting go of the guilt is the best thing you can do for him - don't waste your emotional energy on something that has been & gone (you identified there was a problem & you're working on a plan). tell him you're sorry you weren't yourself yesterday if you want to, but just give him lots of extra cuddles. i'm sure he knows how much you love him & he loves you equally as much