我係呢兩個月嘅使用期間
I've been using it for two months.

Cantonese Sentence Breakdown

我 ngo5
I
me
my
us
we
our
self
係 hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
呢 ni1
this
兩 loeng5
two
both
some
a few
tael, unit of weight equal to 50 grams (modern) or 1
16 of a catty 斤jīn [斤] (old)
a group of about ten people
個月 go3 yut6
month
嘅 koi3
indignant
generous
to sigh (with emotion)
使用 si2 jung6
use
期間 kei4 gaan1
during