4 weeks 2 days

So I found out last Sunday that I’m pregnant but then today I woke up to some bleeding, it’s kind of a reddish brown color. Doctor says it’s nothing to really worry about because I’m having very light cramps that come and go and the bleeding isn’t heavy enough to fill a pad. Has anyone else had this and gone on to have a healthy pregnancy/baby? I’m worried I’m just miscarrying. 😔