couplet of 10 KB Swings (with dumbells) & 10 DB Bench Press Workout

I was a bit sore and tired and tight so I did have to stretch for a while this morning.
I started doing 10 KB swings (using dumbells) and then going into 10 dumbell bench press. Nice couplet.
weights I used: 35, 45, 55, 60, 65 (last set of 10 of both moves), 70 (I did 10 KB swings & 7 or 8 BP), 75 (I did 8 swings and only 4 BP)
I wasn't really looking at the clock, just doing quality movements with FULL ROM and getting full ROM for the BP. I was focusing on getting my feet set for the bench and on the KB swings I was tryign to make the hips and legs drive up the weight and keep it nice and close to my body.
Not too bad but my neck felt off like I tweeked itt. Sometimes I feel this when i do a lot of HSPUs but I had not done anything like that recently?