Normal mestrual cycle length? Is mine normal?

[ZiyanahX]

So I was on the pill for about 3 years and came off about 4 months ago.

I heard conceiving can sometimes be tricky afterwards and it can take a while to get back into your usual cycle:

I got my period as usual the first month of coming off the pill and these were the dates;

4th November - 7th November (30 days)
3rd December - 6th December (29 days)
2nd January - 5th of January (30 days)

I am now awaiting my fourth period.

Is this normal? Are there any other ways to tell whether I am 'back to normal'?

Thanks