*Limitless: The plot and the idea is scheming and awesome, it'll evoke on you a lot of new ideas, I'd highly recommend you this movie, it became one of my favorites, it'll make you realize how powerful is our brain, we just don't know how to unlock all its functions.
*The Lincoln Lawyer: it's a pretty good film, nonetheless, I'd recommend you both, it's difficult to choose, one gives us an interesting and plausible idea about unlocking the true potential of our brains, the other one shows us what a man chooses between morale and money, among other important values of self-consciousness, the performance of the characters is pretty good as well.
Use the Lawyer Referral service. You may be able to get a lawyer to do your case pro-bono (free). Get a lawyer now so that you are in a position to fight him if he does persue this. Check your divorce papers and learn the details of your child custody agreement. You might also get a medical history on your son, showing he's not had any issues with asthma.
Don't sit there worrying about it. Get up and do something to prevent it.