Period

I didn't receive my period in November but the first wk of December I did so just a little late but then I also had my period the end of Dec (27) which is normal only it was very light almost pink one day then the next day a little heavy and then disappeared by Dec 28 before bed .So far in Jan nothing yet but technically it would not be due till the 27 but bases on the 2 odd periods both in Dec I'm debating testing but don't want to be disappointed has anyone experienced this before