I have seen several pilots lose their jobs (not their medical) because they simply could not cope with night flying schedules. Not everyone has the ability to adapt to this. If you have a legit medical problem, yes, you might be grounded for awhile. Maybe even permanently. But finding out on your own right now is better than waking up in an ambulance after your copilot landed the plane on his own. It is a fact of life that you need to be medically fit to fly; that is the whole point of a medical.
I had my medical pulled for something my AME was concerned about. Yes, I put it on my job apps. No, it was not an issue. Yes, I am still flying and life goes on.
Look at the fat four-stripers and ask yourself how many will make it to 65. Then start taking care of yourself. But don't lie to yourself. You can find out now or find out later when you have far fewer options. Good luck.