Please tell me it’s going to be ok!

My 6 month old has a cold, diarrhea, vomiting and really won’t eat and ALL she does is cry. I don’t know weather that’s a good enough excuse to take her to the dr or not but give me your opinions. No negative please! I feel like giving up because I am a single mom, work and now have a screaming baby literally 24/7. I can’t do anything. If I act like I’m walking out of the room she cries I can’t get anything done! It’s really starting to stress me out.