I understand your concern.
In my opinion the light period needs to be evaluated.
I suggest you to get a urine pregnancy
test done to check for the pregnancy.
The symptoms of pregnancy like nausea
,vomitings,increased urination,sore breasts start 2 weeks after missed period in case of pregnancy.
But the symptoms alone will not be sufficient to confirm the pregnancy.
So a urine pregnancy test need to be done to confirm.
Usually the urine pregnancy test gives accurate results a week after missed period.
And the fetal movements are felt around 5 months of pregnancy.
So it might be too early to feel fetal kicks.
Anyways kindly do the pregnancy test.
If it is negative the chances of pregnancy are ruled out and the cause for scanty bleeding like any thyroid
need to be evaluated.
Hope this helps.