Progesterone suppository and spotting

I am currently 5 weeks and 5 days and recently my Dr put me on 50 MG of progesterone supp. As an extra precaution. Well about two -three days after starting I have started spotting. Has anyone else experienced this? Im so nervous due to my prior MC in June. I am going to the Dr today but looking for some relief from this anxiety in the meantime! Tryig to stay positive that my little miracle wilk stay put🙏🏼