<s>[INST] hey, i dont know if you can answer this, but heres the thing, i started the three month birth control shot on october 14th 2010. i never went back for my other shot and i havent had my period since early november. me and my fiance want me to be pregnant but i am afriad to take a test because i dont want it to be nagative, how can i tell if im pregnant early without taking a test? [/INST] Hello dear, I understand your concern. In my opinion side effects of demo shot is irregular periods, no periods etc. This might present even with single dose. The symptoms of pregnancy like nausea, vomiting,increased urination, sore breasts start around 6 weeks of pregnancy. As you didn't get the periods it is very difficult to predict. And the confirmation is done only by urine pregnancy test or ultrasound. Avoid stress and anxiety. And go for testing. Once the effect of shot is over the periods become regular and the chance of conception increases.Don't worry. Best regards.... </s>