Welcome to HCM.
You are carrying 7 wk pregnancy
with probable Threatened Abortion
(causing small bleeding).
Your USG scan is normal.So need not to be much worried.
Avoid heavy work or lifting heavy objects,not walking through uneven surface, avoid stepping up & down and long journey, take healthy diet and adequate rest.
Using inj Susten
gives protection from early pregnancy loss or miscarriage
Recurrence rate depends on various factor. But it is advisable to avoid above things for safe pregnancy.
Be well and tc.