<human>: My girlfriend and I live together and work together. We moved up to a very remote area in the winter so since we don't have any friends or family here we spend 100% of our time together. Because of this it's really easy for me to tell when something is off with her. The past month or so she has been acting really weird.  She's been very clingy, low energy, different in general. She also doesn't want me cooking onions anymore or doesn't want to eat anything with onions in it and the smell makes her gag. She puked when I burped after a few beers. 

I didn't know what was going on at first but now I think she is pregnant. On our Amazon I saw that she ordered prenatal vitamins but she claims they are for her hair. We rented a beach house with a bunch of our friends last weekend in a city that's known as a summer party spot and she didn't drink a drop of alcohol, and she's normally a big partier during this weekend.

I've asked her a ton of times what's going on but she won't tell me and I don't think I should push it anymore because it's probably getting annoying, but i don't understand why she won't tell me what's up. I've specifically asked if she is pregnant and she says no. Should I just drop it and wait until she comes to me about it or keep pushing?

Give me a shortened version of the text
<bot>: I believe my girlfriend is pregnant and if she's not something else is going on but she won't talk to me about it.