You probably will never feel that missed dose. I missed a full 50 units in my hand once. It was good, clean dope I made myself so no abscess, but it was so much volume my fucking hand swole up like a blown up hospital glove. The next day I couldn't use my hand. Excruciating.
My boyfriend had to stab my hand with a needle about 15 times to let all of the meth thickened blood out. Instant relief.
I have several places on my body where I missed. The fat little pockets seem to get smaller over the years, but they are still there. If it isn't completely walled off by the caustic nature of the drug, it will absorb slowly over time.
If you start coming down after 5 hours, you're either doing under-converted meth or meth that has been stepped on quite a bit. The best treatment for misses in my experience is a nice, tight ace bandage or bandana tied around the area. The pressure helps with the pain and reabsorption. Take ibuprofen for swelling. Do hot compresses several times a day to keep blood flowing to the area.
Don't be a hero, if you get an abscess, get to an emergency room.