First trimester symptom question!

Lou
This is my first pregnancy and I'm at 7 weeks and 5 days. I have my first appt on Monday. However, yesterday and today I've had lower back pain along with very slight spotting when I use the restroom and slight cramping type pain. Has anyone else had these symptoms? I'm wondering of its worth calling my doctor or waiting to talk to my doctor on Monday. Any advice or comments appreciated!