...until above MDA and join the missed approach procedure for the opposit runway(19).
And fly head first into the next approaching aircraft?
Usually (ie unless another agreement with ATC has been given, for instance to avoid weather on the missed)
you always fly the missed approach for the approach you have flown. You know - the one printed on the chart in front of you!
If you began the circling to an opposite direction runway (as in the above 19/circle 01 example):
- Missed approach flying in the "19" direction - simply follow the chart.
- Missed approach on downwind while circling - turn towards the runway (as the ground between you and the runway is safe (that's why you are circling there) and pick up the missed approach track for the approach you just flew.
- Missed approach from base/final (my, you ARE having a bad day) you turn towards the runway whilst climbing, and keeping your speed and flap at the circling setting, fly upwind (over the runway) then turn to the circling side for a 225º turn to pick up the missed approach track for the approach you just flew (the runway 19 approach, in this case)