Thanks for query,
The first possibility of swollen lip
is inflammation or an ulcer in mouth may be due to your dieting you have started causes vitamin deficiency
as you have done it in a fast mode.
As it not bleeds while brushing on it the diseases of gums ruled out.
Take vitamin like folic acid
with lactobacilli will help you.
If it increases or not heals then you should go for biopsy
I think that dieting in a agrassive way will harm you as you will not gets nutrients what you need daily.
has no scientific significance to reduce your blood pressure.Thanks