I did a drop set on leg press for 21 on Monday (I was mad about something and this was my way to let it out) and towards the end of the set I felt a pressure building up right where my neck meets my skull, at the base. When I racked the weight a wave of pain flooded my head, strongest at the base of my skull. It was strong enough that I stayed sat on the leg press for ~2 minutes until I could stand. It hurt for about an hour, and then it went away.
The next day at work I was lifting some stuff and as soon as I exerted myself the pain came back. Just today I got through about half of my workout before the pain started coming in towards the end of my sets. It builds while I'm doing the last 2-3 reps, then explodes once I rack the weight.
I want to know if this is something that other people have experienced, and if so, what I should do about it. I'm all for the tough-it-out approach, except when it interferes with my training. Today the pain in my head was too intense for me to finish my lift.
tl;dr: I gpt a bad pain starting at the base of my skull after a gnarly drop-set on Leg press. The pain has reappeared every time I've lifted since.