What are the signs that your tooth is about to fall out? how can I prevent this from happening? (photos)

my gums have been receeding ever since I got pregnant. I'm now 7 weeks postpartum and it hasn't gone away. I went to the dentist because my right front tooth felt loose and she said that the looseness is very minimal and she taught me how to floss and gave me a mouth wash and told me it would go away. 2 weeks later it hasn't gone away, and I'm obsessed with checking if my tooth is looser which is making it more loose. help! does it look like it's going to fall out right now? I'm so scared.

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