Uranus in the 12th house also points to an interest in spiritualism. People with Uranus in the 12th can feel odd, out of synch, anxious, and fear breaking down. Journeying within is the key to healing here. The mid-heaven is the main indicator of career/vocation - but the rest of the chart has to be taken into consideration. The 12th house is indeed about deep stuff - what lies beneath; it's the house of karma and our own undoing. If you have a lot of planets in the 12th, it's no wonder you're confused. Why don't you have a proper reading with a good astrologer who can advise you? My teacher does consultations by skype or 'phone if you are not within striking distance of south London.
Well, it's only the 2 planets in the 12th (but I guess that is enough!).
I'm not sure about having a proper reading at this stage, just like to delve a bit. There is a problem in that I don't know my exact birth time. I know that it was somewhere between 9-12pm, so my midheaven is either in Cancer or Gemini but can't be sure.