Warning: TMI

I'm sorry ladies but I'm 4 months pregnant with my 2nd baby & just finished going to the restroom. I finally was able to have a bowel movement but once finished, I noticed there was blood in my stool. Like a lot, it almost looked like when you're on your period. I'm freaking out a little because I don't recall this ever happening with my first pregnancy. Is this normal? Should I call my DR?