I Have A Very Weak Body After I Gave Birth

I have a very weak body after i gave birth to my 3rd son.hea already 8months now but still i feel weak. Tingling, numb,headache,muscle and joints pain,back pain,sometimes blurd vision,jaw and ear pain,constipated,nausea and vomitting sometimes. I already do a TSH but its normal quite scary i need help.