Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain Macrodantin contains active ingredient 
Nitrofurantoin and it is one of the most commonly advised antibiotic for 
urinary tract infection..
The symptoms of swollen 
sore throat along with vomiting and tiredness can be due to infection while can also be due to side effect of medication.
Sore, swollen throat can be due to acid reflux caused secondary to vomiting and hypercidity..
But the exact cause of the symptoms can be confirmed only after a thorough clinical evaluation..
I would suggest you to consult your treating physician and get evaluated and a thorough clinical evaluation and investigations can help in diagnosis and treatment can be done accordingly..
In case if it is due to side effect of medication the medication can be changed with other substitutes..
As of now you can take 
proton pump inhibitor like 
Pantoprazole or Omeprazole empty stomach in morning..
Take Ondensarton for reducing nausea and vomiting..
Take a light diet, drink plenty of water and take sufficient rest.
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.