I've been so sick lately, should I go to the doctor?

All last week I felt shaky, weak, and weird after I ate something. Then I woke up on Wednesday morning with a congested chest, then I was very sick all weekend with a chest cold. I had a fever, cough, runny nose, and body aches. Other than coughing still, I started to feel better yesterday. Then this morning I woke up with a stomach ache and now I have diarrhea. I took some Kaopectate and haven't gone for awhile, but I still feel sick and I still have the urge to go, so I run to the bathroom but then I just p gas or tiny pieces of stool come out but earlier it was really watery and green (sorry so gross!) Also, I skipped my period last month and lately I've been feeling like I might start. This morning I had some spotting, but that's it. Would getting diarrhea have anything to do with my period coming?? I am so sick of being sick! Should I just wait it out, or call the doc??