First of all, I'm a pre-medical student, so I'm thinking this may just be another bout of hypochondria.
A few weeks ago, I've had a severe pain in my left ear.
A day after, I started experiencing what feels like a shooting headache through the left half of my head. It keeps recurring a few times a day and usually lasts for about a minute or less.
I've also realised that I can't concentrate as well as I did before, and this is definitely going to affect my grades.
Finally, last night while studying, the headache returned, but there was also a week feeling in my arms and pressure in my chest area.
Help, please.