In the second swiss match I found myself in this light game. But the opponents were not very strong so I had some hope.
LHO led a club to RHO's king, I tried to duck smoothly. RHO returned a small club and I stuck in the 9 for LHO's 10.
I thought I'd be in good shape on another club return but no, LHO played the king of spades. I won in dummy and played a spade to my 8, which held. I then played the jack of spades, and LHO ducked after some thought. The position was the following:
1H - 1S
2D - 2NT
3NT
What to continue?

Help

1H - 1S
2D - 2NT
3NT