Pregnancy after miscarriage

I’m so scared! My husband and I have been trying since January 2017, and after a miscarriage in February 2018 we’re pregnant again. 6 weeks and 2 days currently. I’m having cramping and spotting. But I got to see the heartbeat today because my doctor had me come in to check on us. There was a heartbeat, but I am still so scared because the spotting is still happening with the cramping. 😭😭😭 I’m trying my best to just be excited there’s a beating heart in there!