How long does it take for the scar to heal and your muscles to be normal and not achey after a c section?

I'm nearly 5 weeks post c section and everything was great, pain free and all 2 weeks ago. I was moving freely, without pain. Now, after waking around and doing daily things, by the afternoon I'm sore and achey, end the night I'm in agony and can barely move. But, when I wake in the morning I feel fine again..

What's going on? :s

Eta ... Mums looked at my scar to check for infection and she says it looks great. No signs.

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