Bleeding!

Elizabet
Please help.
I'm about 15 weeks and I started getting a weird feeling in my lower abdomen and I was bleeding red. Two red blood clots the size of dimes.
I checked again 10 minutes later and it was pink.
I'm waiting for the dr to open to call.
Should I be worried?
UPDATE!!
Baby is fine!!
Went to the dr and he said during pregnancy the cervix becomes softer and sometimes allows blood to flow through.
I got a sonogram to calm my nerves until the next visit!