My niece keeps climbing on me, help?

Kathy

So my current living situation is pretty crowded (long story, natural disasters aren't fun), and because of that my niece who is 2 years old likes to sit next to me and I can't exactly stay away from her unless I leave the house. I'm 17wks 4days today, and she was sitting next to me when she wanted to get off the couch. She pushed her elbow into me hard enough that it hurt and I'm worried since she's pushed into my stomach recently too. The other times have been gentler, but it still worries me. I do my best to stop her, but this time was harder because my mind wanted to get her to stop asap but if I did that I would've ended up hurting her.

I've had some minor cramps that are probably just the regular stretching pain, but now I'm worrying over every little twinge I feel. I'm trying to stay calm though.

What are your thoughts? How can I stop my niece from doing things like this before it happens? (There's no where I can sit in the living room that she cant sit next to me) Should I be worried about what's already happened?