You have to have sex to get pregnant - fact of life - please read up on the how's and when's of your body because you could find yourself in a situation where you are pregnant and you don't know why - or how to prevent it!! good luck ♥
I always test again if the line is not clear enough, but I also know that there is no way to get that line if you are not pregnant. You must have the hormone in your urine to make that line show up, faint or not. good luck ♥
Some women bleed through their first trimester. I bled alot during it, and my doctor always said as long as you don't have any cramping, and it does slow down, or stop... you should be fine. They never could tell me what was causing it, but it was really bothersome, and nerve wracking!! good luck ♥