Gemaphobe ! Anxiety ! Help

My baby girl is 8 months today but I can't help but feel overwhelmed by the need to protect her from germs . She has been sick twice with flu/cold. The first time was bad , second time not so much . But I still feel nervous about being around sick ppl , having   People hold her , putting her down on the ground where I don't know it etc.... I know this is not normal . Has anyone else felt this way ? Is it a form of postpartum depression this extreme anxiety ? Any tricks for just getting over my anxiety related to germs and the thought of my baby getting sick ?