No one knows yet. The new promo suggests that she is and there are spoilers out there saying "Amy thinks she's pregnant again towards the first few episodes, but is she?" so I guess we'll see. In my opinion, if they are the doing the whole possible pregnancy towards the beginning of the new episodes, I doubt she is pregnant because I would think they would make it like a cliff hanger towards the end... but she could be! Guess we'll see... :)
Btw, here's the website that I got that quote from. They have some good spoilers!
Here's what it says about April 16th new episode, "Suddenly This Summer: "Amy is increasingly short with everyone in her life, including Ricky, leaving him wondering what is going on with her, but he is not prepared when she reveals that she might be pregnant again. Ben, determined to get permission from Dylan's parents to see her, makes another attempt to win them over, but it doesn't turn out quite like he hoped when he ends up sharing too much information about his family. Grace is unsure how to react to her mother's shocking news about the secret her father kept from everyone and turns to Jack for support. And, Anne's evening with Nora raises 질문 for George." If 당신 don't believe me, I found it here, link)
I think that it is definitely possible...I haven't been keeping up with this season *sigh* :( but from the promo it looks like she is. Think about it. She walks into the room and looks all upset, and Ricky looks at her and he is holding a box of condoms...why? And then they are all standing around the 부엌, 주방 at her (dad's place?) and her mom looks really surprised. Either Amy decided that she doesn't want to get married, 또는 she's pregnant again.
Later in the season Amy thinks she is pregnant again and becomes very moody. Although she finds out that she is not pregnant, she is still irritable. Ricky takes her to where they first met and Amy begins to become a little happier and appreciative of Ricky and his proposal to her.