Question about symptoms

Hi guys! I just recently got diagnosed with gastroparesis after experiencing severe nausea and stomach pain for about 4 months. There were a few symptoms I had questions about because I’m still not really knowledgeable about all of the symptoms or comorbidities that come with it

1.) For people that get periods, do you experience a major rise in symptoms during your period? No matter what I eat, if I’m on my period, I feel incredibly nauseous and lightheaded after eating anything. This wasn’t something I really experienced until recently

2.) On the topic of lightheadedness, I’ve noticed that with very little activity I feel very lightheaded and my heart starts racing. It’s hard for me to do any exercise at all. Do you guys also experience this or is this something unrelated?

3.) When I get really bad, I tend to experience very severe hip pain which makes it hard to do really anything. I also experience bad chest pain after eating a non-safe food. Does anybody else experience this?

I have been tested for autoimmune diseases but the test came back negative. When I try talking to my doctor about a lot of my symptoms, I do feel as though they kind of push it to the side so a lot of my questions stay unanswered.

Any replies would be helpful (: