From you question, I cannot tell exactly when her last period was or for how long you have been sexually active. With the break / stretch in the hymen
with a virgin, there can be some pain and bleeding. This is not uncommon. You also imply that penetration remains difficult. It might all be normal, but see my recommendations below.
With regard to her symptoms of nausea
, and cramping, YES these are signs of pregnancy
. She needs to do a pregnancy test and repeat it in 1, 2 and 3 weeks just to be sure.
Here are my recommendations:
1. She needs to see her OB/GYN to do a pelvic exam and make sure that there is not some explanation for her continued pain
2. At that visit, there can also be some assessment of her other symptoms which will necessarily involve an exam and possibly an ultrasound
I hope this helps!! Good luck!