Possible drug-related anxiety during chemotherapy

Hello, I have just finished my first week of FOLFOX chemotherapy and wondered if others have had a similar experience. I was emotionally tired the day chemo started, had quite a bit of energy on day 2 but food aversion/nausea started on day 3. When I had my pump removed from my port, I asked the nurse about feeling anxious. I couldn’t think of any other way to describe it. I could identify a feeling of food aversion, but no direct nausea/desire to throw up. I was told by two nurses that they had not heard of this reaction and maybe I was suppressing fear (?)

However as the day progressed, I felt like I wanted to climb out of my own skin. The nurse said it could be the after effects of the Dexamethasone I had been given at the start of treatment. I took zofran to try to head off nausea, but both the jumpy feeling and an inability to care about (anything) food, water, talking with anyone, doing anything continued for about 3 days, then- like a switch was flipped- I felt “better/normal” (thankfully!!).

During that time I literally could not answer yes or no about anything I was asked, and could not stop parts of my body from moving such as “nervous” foot shaking/tapping - if I didn’t move them, I felt worse. I did this even when all I needed to do was sleep. I have read about and heard people talk about not feeling like themselves or a general feeling of being unwell, but when taking a walk, anti-anxiety breathing and other efforts had no effect I reached out to my Doctor’s nurse who told me they could try to get me in to see a therapist.

Because it truly felt like a switch was flipped on at the start, and off when it dissipated- I asked if it could be the various meds, to which they of course said everyone is different and you need to figure out what works for you. I barely ate in over 3 days because it would take me 4 hours to decide to - or work up to eating anything, even when taking zofran. Strangely, I would need to go to the bathroom, but I had to talk myself into going, and plan how to do it. It would take a huge mental effort to decide to stand up when sitting, how to brush my teeth. I don’t know that this was chemo brain (?). I have never felt this ambivalent or disassociated from my body, and am concerned that if symptoms tend to get stronger as treatment continues- how I can function at home/alone.

Has anyone else felt this way - and if so, what helped you? I tried to drink and move more to move the drugs out of my system, but again- it took hours of what I can only call “concerted focus” to get to/get through it. I know I will get through this, but am still hoping for some insight.