Thanks for your query.
Yes you should wait for 2wks.
Because your sac is lower side of uterus
but foetal pole seen and cardiac activity present,so you should wait to come your sac up.
Your gynae suggest some progesteron and HCG injection
to support your pregnancy
you should go for HCG levels also,are they normal or not.
After 1-2 wks. go for an USG.