Stealing My Thunder (rant)

So when I found out I was pregnant, I ended up telling one particular co-worker who I trusted that I was expecting so that I could ask her mommy questions (she has two kids already), but I explained to her that I would wait until 12 weeks to disclose to the rest of my fellow employees that I was expecting. Well around 9 weeks we found out we were having twins and heard the heartbeats, so I went ahead and announced to everyone (at least everyone I like), that I was expecting twins! A couple days before that, the coworker who I had confided in had told me she took a pregnancy test, but they all came back inconclusive, and would go to the doctor a bit later to get bloodwork, but in the couple times I had asked her about it she said she hadn't had time to make an appointment yet, and hadn't even officially missed her period, so it would be better to wait. But literally the same day I announced to everyone that I was expecting my first child (well, my first two), and before most people even finished telling me "congratulations", she waited until I took a break and when I came back, she had told everyone that she was pregnant too. A couple days later her bloodwork showed she was less than 3 weeks along! Every since then it's like she's been competing for the attention of being an expectant mom. This pisses me the fuck off because not only is this her 3rd kid and this is only my first, but I can't get a word in about any pregnancy experience I have without her butting in and comparing it to herself! She's a whole 7, almost 8 weeks behind me and acting like she's in her second trimester, way overeggagerating every little thing from acting like her pudge is already a bump (she's a size 20 already, so I don't effin think so) to whining about the morning sickness she convieniently only got when I would start  getting sick. It's getting to the point where I really cannot stand her. I can't say anything about my pregnancy without her basically saying "me too!" Even on facebook. Within minutes of me announcing on facebook, here comes her facebook announcement. I post about a craving and she comments what her cravings are . I post about an ultrasound and she says something like "at least you don't have to wait weeks to see your babies' heartbeats!" I literally cannot escape her attention whoriness! I get that every pregnancy is special, but it's incredibly annoying that she's 7, almost 8 weeks behind me and can't just let me have my moment ever. I feel like she just wants attention and is just stealing my Thunder. I'm not even an attention freak, but this is my FIRST pregnancy and with this being her THIRD I feel like she should just stop trying to act like people need to be aware at every moment that she's also pregnant. Nobody can even give me a compliment like "you're glowing!" without her saying "I'm pregnsnt too", to which whoever has to respond "you're glowing too lily". She just can't stop. I could choke her.