Hi girls im currently on cd21 ive been having awful cramps in my womb/uterus for about 4/5 days and some shooting pains now and then they my vigina/cervix, I no it was earlie but I did a hpt lastnight and I woke up thismoring to find a visable line starting st the top but gets fainter as it reaches the bottom im very confused as im not due af til 21st is this likely to be a positive result ? X