You have had a lot of stress in your life recently, and it will probably continue I suppose to a greater or lesser extent.
A BIG cause of headaches is muscle tension, particularly from the strong side muscles that keep your head up. Your shoulder muscles are also connected to your neck so the classic shoulder tension, where we store unresolved tension from stress, will make your muscles very tight and sore.
Headaches will follow, and they will be very hard to treat with pain meds.
If this is the case, and you should check it out, I'd suggest remedial massage every week for a while.
The masseuse will know immediately if this is your problem.
Everyone gets it to a certain extent.
I'm now getting this treatment and I've had a dramatic lessening of my chronic neck aches. My muscles were a mess, and the masseuse keeps finding problems, but she is working through them and getting the various muscles to loosen up.
I could feel the whole tension grip releasing after the second visit.
Beats all the medications and injections I was on.