Welcome to the forum. On 21st September when you had spotting you should have visited a gynecologist to get diagnosed about your pregnancy
. However, you should visit a gynecologist to get examined per vaginally to find out if your uterus
is bulky. You need to get a urine test done to see whether you are pregnant or not. An ultrasonography
for gravid uterus can help you know your situation more accurately.
10-12 days after fertilization, HCG
(humanchorionic harmone) surge increases in the urine. This helps to diagnose the positivity of the pregnancy. You should not stay at home and lose time.
The reports of the investigations and per vaginal examination can diagnose if you are pregnant. Take care of yourself and your diet. Have a good day.