(((hugs)))
Be careful with those "should" statements... they can come back to bite you.
I find breathing, for myself, good to do this way: count of 4 in through nose (either nostril) hold count of 3, out through mouth count of 4, hold count of 3. (That's a slow count too

)
I hope your pain is fully manageable this way. Don't be discouraged if not.
TC