Thanks for the query,
can be detected in blood as early as 11 days and in urine after 14 days of conception.
So at present you can get your blood tested for Hcg.
You can also get TVS done for visualisation of gestational sac
at 4 weeks from LMP.
I recommend you to wait for your next menstrual cycle. If you miss your cycles, then go forward for investigations.
Anyways, continue taking folic acid
, balanced diet and moderate exercise.
Hope this helps,