This is Dr. Christian. Welcome to JustAnswer. A few questions will help me get a clearer picture of this situation:
I can't see any new Feses, but seems to be urinating OK, lastnight he seemed to want to go but was restless and could'nt go. I do not see any wounds under his tail and when I did an exam on him he didn't seem to be in pain with pressute from tip to base. No swelling noticed and no dislocations felt. I could lift tail to 45 degree angle up with no discomfort. Yoda weighs 73lbs ( just weighed him). Yoda has seasonal allergies and we give him 25mg benadryl each day per our vet. he is eating normal, but not acting normal. If I pat on my chest, which his normal reaction woul be to go up on hind leggs and put his front paws on my chest for kisses, he looks at me eagerly, but does not move. As a side note he has not been in trouble for anything for quite some time, and was a very happy and energetic dog up untill bed time last night.