Running 2 packs of the pill together

I'm on diantette for acne and birth control and instead of taking the 7 day break to get my period, I just kept taking the pill. This was because I'm on holiday and don't want my period while I'm here however I have still got all the symptoms of being on my period and some heaving spotting. Is this normal? I don't know if I've done something wrong? Help please:)