Very light bleeding

I know that it is common for people to bleed a bit during all stages especially in the first trimester but I'm scared shitless its the start of a miscarriage especially since my last pregnancy ended in a 2nd trimester miscarriage. Also the fact ive never had this in any of my other pregnancies (total of 3 now 4) I called the ob on call ( love my obs they are very good at calming and going over everything) he said he isn't to concerned as it isn't no where near heavy enough for me to need a pad. He did say if it seems to get worse/heavier for me to come in or if the bleeding stays this way till monday then he would want to set my first appt sooner then the 13th.... I'm praying its all in my head and we are good but still oh so scared :(