Scared

So yesterday I went in for ultrasound to see how far along I am...... find out that there’s twins and possibly triplets. As they seen 2 fetal poles in 2 sacs but not the 3rd one well last night I started spotting it was only when I whipped and then it stopped today it started again I’m nervous I’m going to end up miscarrying the babies. I call the doctor on call she told me to keep and eye on the spotting if it gets heavy or I start cramping to call and go into the Er. Please send me positive vibes