You typically only see a sack till closers to 8 weeks, heartbeat you can see at six weeks. I've had five miscarriages and one rainbow I've learned a lot. Your fine as long as hg going up.
I went to go get a free pregnancy test at this clinic & they told me i was 6 weeks i went to the hospital last week because i was hurting bad , and they had to do a sonogram so they told me they couldn't see anything , but iam pregnant maybe because iam early in pregnancy so today i went for a sonogram and they told me i was 5 weeks & 4days! But in my sonogram i can't see no baby! They told me it's so tiny , but that iam 5 weeks and 4 days! But in my case i saw 2 BABY'S HOUSE! so hmmmm i hope its not twins!!!!! Lol something it can be like that but once the baby is getting bigger it turns into 1 !
I'm about the same as you but I have not done an ultrasound yet. My HCG is rising too. I wish us a healthy pregnancy and safe delivery.