Forehead and Between Eyebrows Feel Tight and Heavy After Botox?

I had 20 units Botox places in my Glabellar area 2 days ago. Ever since the injection, my forehead developed a very heavy/tight/numb feeling. My eyelids also feel heavy. They look a bit puffy but no visible droop. Is this tightness/heaviness a bad sign? Will this progress to eyelid droop? I read that botox wouldnt have begun working immediately so I am insure what is causing this bad feeling. When can I expect this feeling to go away? It is very troublesome. Is there any home remedies? Thank you