One week ago they didn’t see anything and said it didn’t look promising. Today we have a heartbeat

A bit of background, we’ve been trying for over a year and had 5 early miscarriages/chemical pregnancies. I went back on my adhd meds and we stopped trying. I missed my period and found out I was pregnant. We did a few early ultrasounds and saw nothing. On April 29 they saw a gestational sac, but no yolk sac and no fetal pole. They said there was a bleed around the gestational sac and said it didn’t look promising. The doctor canceled my 8 week pregnancy confirmation, but still had me come in for an ultrasound today. And today there it was a freaking baby and a heart beat. The heart beat is faint and slow, only 42bpm, but it’s heckin’ there! I was fully prepared for them to tell me there’s still nothing but a gestational sac and give me something to induce the miscarriage. I had no hope and came to terms with another loss.