Excessive Tiredness/Fatigue

Posting again in hopes I’ll get more response this time. I’m not looking advice as I am in talks with my doctors, just hoping for other experiences to make me feel less alone. I am having excessive fatigue in my second trimester. (25w3d). It is not always consistent from day to day, but there are days- like today- where I genuinely cannot function AT ALL. It’s hard to put into words what I’m feeling. I feel like I genuinely cannot keep my eyes open AT ALL and like I will fall over. I feel like I’m living in a different dimension almost. This then makes me panic. All levels have been checked and my doctor just keeps telling me that unfortunately it is part of it and I just need to allow myself to rest and keep hydrating. I will add that I do have an anxiety disorder that has gotten worse with pregnancy. I am on medication and I do think some of the fatigue can be contributed to that. I have struggled with some sort of illness that doctors have still yet to figure out over the last 5 years and I have dealt with this level of fatigue a couple of times before. It makes me think it is all related to hormones. However, I feel more than tired. I feel completely disabled. Has anyone ever felt this in their pregnancies? Especially those of you who have a chronic illness?? Again, not looking for advice but similar experiences. TIA!!!!!