Regardless of what triggers the stress, stress can and will harm your body if you don't find ways to relieve it. My SO is always under stress, has been that way for a very long time and for various reasons that I can't go into (plus a bunch she won't tell me). That stress has caused some bad things to happen (and more stress since she needs to feel in control) on top of many of the other symptoms people have identified here. What you need to do is find things that will help release that stress. For us it is taking a drive and spending time together. For you and others it will be something different.