Sayang, I'm really sorry you're going through this again, it must be so difficult for you. Please go see your doctor or go to the hospital soon, okay? These symptoms you're describing, the nausea, breast pain, and tightening in your tummy, need to be checked by a medical professional to make sure everything is okay after the miscarriage. Every pregnancy and loss is different, so it's important not to compare, and a doctor will give you proper care and peace of mind. Thinking of you during this hard time.