Hi there.
A more detailed in-depth evaluation of your problem plus some good quality digital pics needed to propose ideal cream to treat the flea bites.
Yes it can be handled and there is nothing to stress or worry about and yes flea bites can lead to a variety of issues depending on the geographical area and endemicity of problems.
An Online Consultation is probably best for now for a more detailed treatment for the bites.
Good luck and Godspeed 🙏
Health Tips
Repellant in the market such as Odomos work to "prevent" bites
If Fleas are definitely the issue, then treatment of any Pets 🐶 😺 in the vicinity & treatment of Fomites is advised strongly.
Simple procedure of keeping your *legs raised* eg using a recliner or foot stool will help as fleas have a limited height they can jump to (this is why ankles and lowe legs most affected)