I think a bit if spotting is ok thus early with implantation and what not but those tests all look nice and dark for this stage too mayby going to dr would be good to get bloods and also if you do have miscarriages they can check your progesterone and stuff so you have a lower chance of miscarrying if that was the cause your not wasting anyone's time it's there job

Oxo I hope all goes well and congratulations!!!! ill be watching and waiting