I'm freaking out!! 😫

Sarai • Mommy of 3 amazing teenagers!
I woke up at 2:30 am this morning to go pee and I was bleeding! The blood was dark I started crying and called out to my SO he rushed to the bathroom and told me there had to be an explanation... I have a doc appointment this afternoon and I'm at work right now and literally had to insert a tampon cuz I was bleeding a bit more when I got to work, I am 4 weeks and a day today ... I was so excited when I found out and now my heart is breaking... I thought maybe implantation but it looks to dark and it's not flowing out but everytime I pee and wipe it's there 😭😭😭 any words of wisdom would help because I have no one to tell since we decided not to share the news with anyone in our family yet about our pregnancy 😢😥😭
****Update: I got an early doctor appointment the bleeding and cramping didn't stop the doctor saw the sack but she said it could be early sign of pregnancy or early sign of miscarriage 😫 they did blood work and I will get results tomorrow and she put me in bed rest for the next few days ,  after those results come back they will do blood work again on Monday , prayers very appreciated 😭