sounds same as me hunni 3 day in felt like someone kicked me in chest -got worse as I was working at home from day one so you need to rest not lift your arms and don’t pick anything up or carry anything 1 week after I was good less painkillers as gave me a headace as was having 1 every 2 hours.
2 weeks post now and I feel fine still won’t lift my arms too much but the pain just stopped 
hang in their it’ll be ok -drink lots of tea really really helped xx