My flu shot now 24 hours ago is still sore if i press on it plus a little achy. .. is this ok?

Yes: Mild ache and tenderness at the site of flu vaccine for next 24-48 hours is common. If it does not resolve or becomes red or more painful the see your pcp.

YES: You can put wam moist heat to it if it hurts.

Ok: Some soreness and itchiness are expected for a couple of days after a flu shot "or any vaccine", i wouldn't worry about it.

Flu shot: It is not unusual to have some discomfort after a flu shot. Some patients even experience muscle aches and a tired feeling for a day or two. Stay well hydrated, and take one or two Ibuprofen every 4 to 6 hours for any discomfort. Feel free to get a flu shot next year as the discomfort will likely not recur.