Need Encouragement

Well I went to the doctors to get a womanly exam because the from June 1st-June16 i bled (cycle I guess) (Never bled this line with a cycle of after giving birth). Well they test me and it comes back positive I am pregnant but than they want to do an ultrasound to make sure baby is okay (because of bleeding)well using June 1 made me 7weeks (Friday). Well they look and only see sac and something else(forgot what he called it) so they say either I am having a miscarriage or I’m only about 4weeks pregnant. So they took my blood to test my HCG levels and will test again Monday to see if they are going up or down. Mind you I haven’t bleed since the 16th June but all on a sudden on the ride home I feel myself get moist and low and behold I started bleeding (they only did stomach ultrasound so no aggravation to my cervix or anything) it was red but turned dark brown by the end of the day. (Left doctors around 10am).. I am praying GOD will allow me to keep this child. Please pray with me... I am so scared I have had one miscarriage (my first pregnancy) and I have a 2 yrs old and a 10month old.