Prenatal paternity test?

Hi, I’m wondering if anyone can help me. 😕 

Against my better judgement (probably) I ended up agreeing to a prenatal paternity test with a girl who lied to me and cheated on her partner.
This was almost three weeks ago now and I’ve yet to have the results. I even contacted the clinic on Sunday but was fobbed off with a story about there not being enough foetal matter in the sample or something, and we’re still waiting on results. 🤔 

The mother is, to put it delicately, a bit evasive and difficult and contact is a bit strained. She hasn’t made contact and I’m wondering if she’s been told the results and I haven’t.

Does anyone have a rough idea of how long the results should take for this procedure in general? I was told 2 weeks.

Thanks.