Best contraceptive...?

I want to have a reliable source so I don't get knocked up! there are 3 I would not mind (the patch, Implant, intrauterine system(IUS) because you don't have to think about it everyday like the pill. it is very sad but I don't like my mum to think I have it until I find a boyfriend but there are things she doesn't need to know, I live with her and I am on the same time as the month as her and she will get my pads etc.. I hear you may come off your period or be irregular so I don't want her to notice which one will keep I regular period? thanks :)
Best contraceptive...?
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