4weeks pregnant

Ok so recently I found that I was 4wks pregnant I was spotting at the time I found out when my period was supposed to be due. Now my it’s like kinda heavy bleeding, this is my first pregnancy so I don’t know if it’s normal or not. Google says it is but what you guys think? I have a appointment Wednesday to see though. It’s scaring me and stressing me out tbh . This might not be group topic but I’m worried 🙄