Even carefully holding over a candle or dipping in hot water should allow the stem to be reshaped. But here's where some additional reading or Youtube videos will pay off.
How bout some pictures of what you have there?
Once your photos are on a photo hosting site (such as Imgur.com; Photobucket; Postimage; Dropbox, etc.), or on virtually any site, select the full image, then Control-click (Mac) or Right-click (Windows) on the image itself, then choose copy image location. Now paste that URL (the full web address, which should end in .jpg) into the IMG box in the reply window of the thread you're posting to.
And welcome to the forum!