Please answer...should I call my doctor?

Hi all,
30 weeks pregnant and woke up this morning spotting. I had sex yesterday morning but didn't have any spotting at all yesterday. Pretty sure I lost part of my mucus plug about 2 days ago, but it did not have blood. This morning was about 2 drips into the toilet of pink blood and then some pink when I wiped. I've been insanely stressed lately so I'm just really worried. Should I call my doctor? Hate to bother anyone if I don't have to since it's Easter and all. Thanks in advance for your help.