Well my friend, I think I can safely say you're not pregnant.
BUT - I think you have a good case of depression - combined with some grief.
For heavens sakes you lost your Dad only last month!
You've got some grieving to do. You may think you're done, but I have to tell you that you're NOT. We all go thru 5 stages of grief: shock, anger, depression, bargaining and acceptance. I personally did not go thru the bargaining when I lost my husband. But I did go thru all the others, and the same was true when i lost my parents. No we're not all alike, but you still have more grieving to do!
Plus I'd bet that you have some depression going on. Did you feel like this before your Dad died, and before his illness/death? I think you should discuss this with your doctor and see what he has to say. You might possibly need medication to "level you out." I've taken anti-depressants for about 40 years now, due to having clinical depression and I'll have to take it for the rest of my life, darn it. But without them, I'd be in the pits of hell.
Anyone who wants to give up everything and not do anything is truy depressed, so talk with your doc, ok? And PLEASE -- let us know what happens will you? I'd really like to know. God bless and please take care. Hugs, Lee