Help. I had CoolSculpting done 12 days ago. I have two long red lines on my stomach.

The red lines are totally normal. They are from the gel trap inside the applicator . This indicates that you had a good draw, which should lead to optimal results. 
Applying Aquaphor to the area will help and they should resolve soon.

Redness, swelling, and sometimes bruising are completely normal in the days following a CoolSculpting treatment. The redness and any other side effects will dissipate daily. Most of our patients have no residual side effects before they come in for their 30 day follow up; if you leave for the beach in 2 weeks, I'm optimistic that you will be good to go by then!
Every patient reacts a little differently, but like all possible CoolSculpting side effects the redness will go away.  Just remember that you're getting all of the benefits of liposuction, with none of the downtime or invasive damage to skin, nerve, and other tissues. Best of luck!

Dear careyoffutt:

Red lines or bruising are side-effects of CoolSculpting. Each individuals tissues will react differently. The good news is that this is temporary and indicates a good treatment. Ways to hasten the redness include:

Massage of the area will improve the discoloration.
Fresh pineapple with the active enzyme bromelain has been most helpful in reducing bruising.
Use of oral and / or topical Arnica montana may improve the redness quicker.
If this persists, follow up with your CoolSculpting Team.
Good luck with your CoolSculpting results!