The trendline has already been broken here, previous higher lows has also been violated, creating a strong bullish movement. But the retest can either break its previous highs and continue in the uptrend, or break the previous lows and continue in the downtrend which will then obey the trendline. there might be a few consolidations, but after breaking a key level I'd strongly advice you wait for a strong momentum candlestick. Also watch out for wick rejections and candle sticks patterns.