Feels like i've got a cold but i haven't?!

Feels like i've got a cold but i haven't?

Every so often i get really achey in my muscles and sharp pains in my pones like when your ill with a cold. I also get a bad headache and feel very tired and fatigued. I don't think its a cold as i've no runny nose, sore throat or cough and i don't feel like im sick.
It happens maybe once or twice a month since the birth of my baby (8 months) She's very hard work and i need all my energy to keep up with her so i could do without these sudden bouts that last a few days.
Does anyone have any ideas what it could be?

4 days ago
Sorry just realised i spelt "bones" as "pones" lol

Sounds to me as you are absolutely exhausted and you should consult your doctor . It could simply be connected to a minor blood issue and you may need something like an iron tonic . Your GP will be very understanding and it certainly seems to be connected to pregnancy and birth when all your energy is passed on to baby
Also maybe you need a bit of help from your partner , or parents . Even if it is only taking charge of the youngster for the odd couple of hours every couple of days.
I hope you are back to full strength soon