Dealing with Health Anxiety and Seeking Advice on Hospital Visits

I've gone 2 days having bad nausea and my IBS has felt worse. I've had dizziness for one day, and tonight I am having difficulty with urination. I also have a fear of going to the hospital if I might not need it (my mother has Munchausen by Proxy, but we could only be sick if she wasn't sick) so I'm fighting with my self on rather I should go to urgent care tomorrow because the dizziness is so persistent. I'm also having too much anxiety to sleep because I'm worried something will happen to me and I won't make it to the hospital because I live on my own. I write all of this just to see if anyone could give me advice on dealing with this anxiety, and if you have worked in Healthcare if you can just tell me what they look for and how hospitals work, because I never know if I need to go or not. Of course you can't diagnose me, but I was just thinking something to make me feel better about what doctors do and deal with so I don't feel bad if I go, and again, the anxiety.