Bleeding almost 12 weeks pregnant

Hi mommies, anyone of you who experienced spotting then heavy bleeding (although minutes lang) then light bleeding naman (all of these happened from 6th week up to present) and had a successful pregnancy? Negative thoughts are getting the best of me. I am currently on bed rest and is scheduled for follow up check up this week. I am losing the positivity battle and in dire need of some positive inspiration to get me through this week.