Chemical pregnancy

I tested positive yesterday. Im only 16 but I was so exited I told my family and stopped smoking the second I saw the positive, today I went to use the bathroom and there was blood, my tests are no longer comming out positive, and I’m beyond broken and confused. I was so ready to be a mom and now I feel like I failed myself. Is there anyway I’m wrong and I’m still pregnant or do I give up on the idea and allow myself to let go. Im so torn and even typing this is hurting my heart so bad. I appreciate anyone who has been supportive in the comments rather than being judgmental as I am already judging myself hard enough as is.