Either way, I'm in a bad situation. I'll act under the assumption been framed for the murder.
Do not touch anything, don't leave anything that would indicate my presence in there. Do not attempt to even rearrange the scene to make it seem I wasn't there. It's already too late for that. All I can do now is to minimize any additional traces of my presence.
Drink some water. Find some random container that won't be missed and won't be conspicuous, maybe something from the rubbish bin, and fill it with drinking water. Do not take anything from the fridge. The point is to minimize any evidence that could point towards me.
The clothes might be a problem. Washing it could work, but it might be easier to just tear the bloodied parts or otherwise just go without the top layer of clothes. Do not throw them away inside the house, but be prepared to scatter them later.
Don't leave at night. It'd be too conspicuous. The middle of the day, when everyone is either at work or busy having their lunch, works better. Take just enough water to not die of thirst. The point is not to attract too much attention.
When ready, leave. Don't take the car, just walk. Don't look too suspicious, but don't act too casual either—better yet, don't act at all. However, be cautious. There might be someone watching, following. Don't take any drastic steps, just walk. If choosing to dispose of the bloodied clothes (or portion of clothes), casually dispose of them in pieces in different garbage bins I may encounter.
I will be walking until I reach the nearest urban area, but basically assuming that:
- I'm being framed for the murder, and so going to the police isn't going to help
- I'm basically a "dead person" from that point on. My options are down to
- try to survive being a beggar. there might be a way to claw my way out of this but being a wanted person makes it nearly impossible. staying a beggar, and hence invisible from the rest of society might be better
- find a way out of the situation in my own terms
Thinking about it, maybe it'd be easier if I just join the dead guy.