My periods are not come my date was 10th yesterday while sleeping I taken 2 packets coffee of 10rs  in water and I went on bed because coffee can help me for having periods but while I'm sleeping I feel vomiting because of coffee. afterwards some time I gone for toilet I wake up so many time because to pass out  my urine and afterwards some time I got vomating in sour , bitter taste from night till morning I'm vomating. in the morning first I got vomating whatever I eaten that throuwn out through vomating and behind that I continuously vomate black in colour it's also in maroon or brown type this type of vomating I have 5 times. I'm feeling I getting periods but there was no leaking it my stomach paining down towards in the middle of my breast. So can you help me to tell I'm is pregnant?