Hi, please I m worried I always have irregular periods, my last period was on the 19dec,2016. I then had unprotected sex on the 26december and had protected sex on d 5th January, since then my period hasn t yet come, I took a home pregnancy test on the 13 January but it was negative, I have been taking brown slimming tea (containing senna seed, haw,lotus leaf). Please can I be pregnant or it s an effect of the tea or it s because of an irregular period. Thanks