Reversal is part of settlement pressures?

Trading on previous day shows that huge short covering by operators with a view to create good will in the markets.  As per stochastic market is in short term bull phase and it may last for two days. Nifty levels as per hourly chart are that 2750-2800-2880-3000-3150. As the F & O settlement is going on we may not expect a full range of bull run. It may reverse back may be at 2800-2880 and even markets may close at lower levels.  There are sufficient - ve news every day for a major down fall.