Spotting/Bleeding - 1st Trimester

Hi everyone. I am 7.5 weeks pregnant and have been spotting (mostly light pink/dark brown in colour) for a week and a half. I went to the hospital on day two after the spotting started and apparently everything is fine. We were very lucky to see a heartbeat and the nurse put the spotting down to being "one of these things". Of course I'm trying my best to stay positive, but every time I notice a little blood on the toilet paper I am reminded that something could go wrong, it's very anxiety inducing! After nearly a year of trying to conceive I feel constantly scared that this pregnancy is going to end.

Is anyone going through this or has experienced frequent spotting during their pregnancy?