You can get another loan, provided your income and expenses are of a sufficient ratio. The best thing to do would be to contact your lender and have them run the numbers for you.
Also, if you find a property that you like, you can add a contingency for the sale of your property. An offer with a contingency in this current market is not a great scenario, however, because we are getting multiple offers on everything out there! So, avoid that if you can, but I believe that you don't know if you don't ask, and the worst that can happen is that they say no! So if you cannot get a second loan at this time, and you find a home that you love, it doesn't hurt to put in an offer, even if you have to include a contingency.
If all else fails, be assured that your home will sell soon, and if you need a buyer, please let me know! I have people lined up and ready to go!
If I can help you any further, please don't hesitate to contact me! Best of luck to you!