Ok, firstly, unless theres some family history, then the chances of her dying during birth are very slim.
When is her period due? And how long does her cycle usually last?
"most" women ovulate, 2 weeks before there next period is due.
U can get her tested with a first response tester, a few days before her next period. Or... Wait until her next period is due, and missed.
I wouldnt have thought that pregnancy symptoms would take effect, so soon after conceiving, if in fact she has concieved.
I hope this is of some help.
And I recomend you using protection in the future, if you are not ready to become a father yet.