I've been trying to figure out what this pattern is for weeks..

Megaphone is one possibility.

 

I would also say megaphone. Or how Bulkowski calls the pattern, "Ascending Broadening Wedge". I find the visual index of chart patterns on his site very useful. Just put it side by side with the pattern you're looking at and go through it.

 

or if to take the lines away, it's an Uptrend, Higher highs and Higher lows