Here’s the history so far:

My LMP was January 16th.

I had unprotected sex January 27th, 29th and Feb 2nd.

I got negative pregnancy tests between February 10th and 12th.

AF was due February 14th.

I got a faint positive on February 15th. Since then the lines have been getting darker.

All signs pointed to me being 6 weeks and 1 day today, but at my ultrasound appointment today, they saw a gestational sac and dated me a week behind at 5 weeks and 1 day.

Would any of this point to the baby not developing properly? Or could I have ovulated and conceived later than I thought?

We just suffered a miscarriage in December, so every little thing worries me right now.