Toddler sick again

My toddler isn’t talking much yet so she can’t say what’s wrong. She woke up crying tho. She’s been nonstop crying this morning and grabbing the right side of her throat every once in awhile. I think she has a sore throat.

She just had a fever and was throwing up about 7 days ago. She seemed totally better after 2 days. Now she seems sick again. She never usually gets sick so I’m surprised she got sick again within a few days

Any tips? At what point would you take her to the doctor? She hates going to the doctor and she’s already miserable :( I feel so bad

Update: I took her in and doctor couldn’t figure out was wrong. As the morning went on, I realized SHE HAD A SORE NECK 🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️ that was the problem.. she slept on her neck wrong and was panicking about it lol. I realized at the drs office when she constantly had her head turned slightly to the left all morning. When she was sitting in a chair in the corner there and kept her head turned slightly left just staring at the wall bc she was afraid to move her neck! I pointed it out to the dr. She was absolutely freaking out about it which worried me, she was crying constantly at the dr too. As the day went on, she started acting more and more normal and her happy self! It was 100% she slept on her neck wrong lol. The doctor called me the next day to see how she was doing, and she even said the whole situation was weird 😬🤣