for finer predictions we need to consider 71/2 from lagna and chandra navamsa also.
when saturn is in 12th, generally there will be a displacement in position(a transfer or a fall), too much unnecessary travel, mounting expenses etc.
in 1st, it gives head aches, physically and mentally and also health issues to oneself and ones loved ones. Sometimes i have seen that one chances to participate in many death functions during this time.
in 2nd house, it is resource constraints and related tensions.
presently saturn has gone into retrogression and has re-entered the sign of kanya to stay there till august 2 nd week.
this time will be utterly confusing as people who finished sade sathi or seven and a half is again feeling the 2nd house effects, taking their long awaited projects again to a stand still.
prayers to saturn, breathing meditation and daanam or donations can bring some peace, but you need to be patient till august.
well, its worth the wait.