It's normal to have some localized swelling (resembling mosquito bites) at the sites of injection for ~30-60 minutes after treatment, but it's not typical to have swelling after that.
How long has it been since your treatment? It is not abnormal to have some swelling following treatment with Botox. I would recommend following up with your provider regarding any concerns, as they know the extent of your treatment and will be able to provide you with advice. I hope this helps, and I wish you the best of luck.