Chest pressure / back pain / nausea

Al

Almost 3 weeks postpartum and in the past 2 hours I suddenly got pressure in my chest and my back feels sore . I feel like this may be from breastfeeding but at the same time I’m really not sure . Did anyone else deal with this and if so what was it ? Or what helped . I don’t want to go to the hospital for nothing . Yes I know none of you are drs out can tell me what’s going on just wondering if anyone went through this