9 weeks brown / clear spotting, severe cramping and back pain

Hi all, was hoping someone might be able to put my mind at ease. I’m 9+3 with my first baby and generally quite an anxious person! I had an early scan on Friday (9+1) and saw the heartbeat. Sonographer said it was strong and everything looked good. I had a bit of pink spotting last week, but it seemed to disappear. Today I’ve had severe cramping (like really bad period pain), pain in the right side of my back and brown spotting. Should I be worried? Google is giving me mixed answers. Thanks in advance! Laura