Failed IUD, false negs and need crib help!

Hey gals! Long story short-our daughter didn't have a period for nearly two years as she breast fed and had the Mirena (sp) when our grand daughter was 6 weeks old. She'd been showing signs of pregnancy for the last 4 months and had been taking MANY tests at my insistance even tho they kept showing negative. Any way, it seems the hormones prob. are what made these urine tests give a false positive. Our daughter is feeling very over whelmed at the thought of having a 20 month old and a newborn and a boy at that! Se has a great fiancé though and we aren't concerned at all!
We have 7 weeks to prepare for this baby and since thy are both working full time, everyone is helping out. We are buying a new crib and need help with brands. Is there a better or more popular brand? All the suggestions leave us confused!!
Thanks on advance for your help

 i love my TUSCAN SORELLE its a crib and changer that converts to a toddler bed and then a full size bed.  you can google it for places that sell it.  Congrats to you and your daughter too!!

WHEW that is a lot to process, but it sounds like y'all have a great plan in place.

My mom and I shopped for cribs for over a week. Between on-line reviews, and some friend's suggestions, we went with the Delta Cambridge convertible crib(bought it at Target). I should add that we have not assembled it yet because we are closing on a new house at the end of this month so we're waiting until we get to the new house. Obviously, we have plenty of time since I'm only 7 months pregnant.

2 of my friends have this identical crib, and they love it. It also has a changing table attached to it with additional storage, and it converts to a toddler then a full bed.

I went with the Espresso color, and have found it super easy to find a matching dresser and decor which was a huge concern for me.

omg, this is scary ive had the mirena for over 2 years now and have never had a problem, but lately ive been feeling soo tired and nauseous this week. Im in my 3 month weight loss pre requirement , so i hope that It doesnt fail me now.

I'm not sure about pregnancy chances pre-op. I had polycystic ovaries pre-op and and had a mirena iud. Everything was fine. No pregnancies. Fast forward 15 months post-op. Mirena failed me. I was sick and sleeping all the time and found out I'm knocked up. If you have any doubts, get to the drug store and get a first response test or whatever you want to use. Nutrition is especially important in the early months as that's when the brain, spine and organs are developing.

Thank you all soooo much! We have decided to go with a very nice and well made Delta from Target as well. All of your answers were very sweet!!