Hi... It is completely natural to feel overwhelmed at times while taking care of a 7 months old baby alone.
You might also be suffering from postpartum depression which may require professional help.
Please seek consultation from a doctor (physician/gynaecologist) for joint/muscle pain.
Next Steps
Consult a Psychologist.
CBT along with Motivational Counselling and Lifestyle Guidance is required.
Health Tips
Mr. Gunjan Maithil
Senior Psychologist
Cell: Nine Six Seven One Three Zero Three One Three Four (whatsapp)
Website:https://gunjanmaithil.wixsite.com/therapy
App: http://wix.to/fECHB08?ref=cl