MYL Day Trade, high volume be aware congested on the down side

MYL is gaped up on merger news with Pfizer company, premarket volume is very high at almost 5 million shares which may cause congestion. Although the Daily chart is weak yet if you look at the 15 min chart on the right you will see that there is a lot of support in the form of pivots, trendlines and 20,50 daily moving averages. I like it better for a long since it has less resistance going up rather than down.