Lying about being pregnant.

****First I’m not sure where to post this

A girl I had sex with 1 time and she keeps telling that she is pregnant. I used a condom and also pulled out (don’t educate me on sex Ed I already know what can happen) 4 days after sex she was telling me she was pregnant blah blah blah.. it’s been about 2 months and she is still saying all this crap and she even sent me a NEGATIVE pregnancy test yesterday 🤦🏻‍♂️she has taken 4 tests in all that are negative but keeps saying she has a missed period . I’m only 17 so I do not want a baby at this time but with everything she keeps telling me she is not pregnant and i have been stressing out about it every single day. The real question here is there any legal things I can do since she keeps lying to me about being pregnant?

Update: she keeps denying to go to the actual dr to get the test. I have tried multiple times to get her to go but she won’t. I’ve also blocked her but she keeps finding ways to contact me.