Spotting

So should I be worried? Around midnight when I got up to use the bathroom, I noticed a little spotting. It freaked me out so I went to the doctor. I’m only 5 weeks and 4 days so they could only see so much. But the doctor said at the time everything looks ok. They want me to come back in a week so they can get a heartbeat since it’s just too early right now. It wasn’t a lot of blood and it hasn’t been all day (only at midnight when I went to pee and then again when I was at the doctors office after they wanted me to drink lots of water to get a good reading on the ultrasound) , I don’t have a history of miscarriages, this is my third pregnancy, and I’m just trying to see if this is normal or should I be worried. I work two jobs one requires me on my feet a lot and the other not so much (I don’t know if that could impact things) I just want to hear you guys opinions to see if I should be worried or when I should start worrying.