Big headaches, hot flashes, and night sweats? Could it be the flu?

Not typical. Need more detailed description of symptoms. Where are the headaches, are they constant, how severe, what relieves them, etc. Are you having fever, when and how much; sore throat, muscle aches, gastrointestinal changes (nausea, vomiting, diarrhea). To what have you been exposed (sexually or otherwise). This does not necessarily sound like influenza, but need more info. See doctor.

Related Questions

What helps with night sweats for 2 nights? Could it be the flu?

Could be anything. Take Aspirin or tylenol (acetaminophen) before you go to bed. If this persists or you have other symptoms, see your family doctor.

Throat pain and itchiness, joint pain, night sweats, fatigue. Do I have the flu? Or something more serious such as throat cancer? It's been 6 days.

Flu. Are those the choices in your mind? Flu or throat cancer (in a 24 year old)? do you have history of anxiety or obsessive-compulsive disorder? Why would you think "throat cancer"? and how would throat cancer cause joint pain? Sounds like the flu. Stay well hydrated, rest, treat symptoms supportively, and stop all alcohol and tobacco use. If not improving in 2-3 days, will need medical attention.