Pregnancy symptoms easing am I loosing my baby

Mandy • 💏2012 🎀👶🏼1/10/14👼🏻+👼🏻+👼🏻+👼🏻2019👼🏻6/30/19,👼🏻5/31/20

Ok so I’m 6 weeks 4 days pregnant and I’ve been having spotting for 2 weeks and cramps for about a week. Yesterday I started having actual bleeding so I went to to er but luckily they found a heart beat but they also saw my gestational sac is irregular meaning it’s not shaped correctly and that can lead to a mc. I’ve had extremely sore boobs this entire pregnancy and while they still hurt they aren’t as bad as they have been and that has me worried somethings wrong and I’m loosing my baby. Please help me calm down and feel better. Also I’d just had an ultrasound 3 days before that and there was no heartbeat so it’s just started beating between then and yesterday. My ob said the heart rate was low at only 95-96. Is that cause it just started beating or is something really wrong with our rainbow baby? I know that’s a question for my ob and i plan on asking he tomorrow but for now I just need reassurance