Thanks for your question on Healthcare Magic.
I can understand your concern.
By your history and description, possibility of
musculoskeletal pain due to pulled muscle is more.
So ask him to follow these steps for better symptomatic relief.
1. Avoid heavyweight lifting and strenuous exercise.
2. Avoid movements causing pain.
3. Avoid bad postures in sleep.
4. Give him painkiller like
ibuprofen.
5. Apply warm water pad on affected areas.
Don't worry, he will be alright with all these in 1-2 weeks.
Hope I have solved your query. I will be happy to help you further. Wishing good health to your husband. Thanks.