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Just dont worry about it too much you will know yourself when you will get them because when i got mine i was eating tones and tones i was also very angry and sad i also had cramp and just knew instantly it wasn't a bug or anything else and on the third day i was finally full and felt more calm and when i went to the toilet there it was i got them :) just dont worry though i heard the.more you worry you dont get them!

you will be fine there is nothing wrong if really worried then ask your mum or doctor they can really help