Last week had sore throat, fever (100), cough, this week sore throat goes away then comes back in middle of the day and at night? (cant swallow)

Possible acid reflux. May causes of sore throat & cough that come and go. Can be associated with difficulty swallowing. You don't have to have heart burn. Other symptoms include a hoarse or scratchy voice, bad breath, burping. Diet might contain acidy food, too. You could also have an infectious problem/lingering virus or untreated strep infection. Would see a doctor if persists for more in depth evaluation.