i came off the depo shot over a yr this month because im wanting another baby ive been havin my periods every month since march with no probs but my last 1st was april cabt rememeber may 10th june bout same july the 11th aurgust 6th and this month nothing do i go by my julys period or aurgust months ive been feeling really tired lately eati 1 certine food love drinkin milkshakes ive done a test but was a neg result ive read that you can have neg results how common does this happen and could i be pregnant ive thought i was goin to start my period today as when goin to the loo had a stoppin but now nothing whats gopin on plz help