FIrst I would do two things: A) decide on a buyer's agent to help you and then pick the lender you wish to give you a loan. B) Don't discuss financial things like how much you can afford with anyone but those two people. If you tell someone that you can afford $X amount then you go and look at a property that, that particular agent lists then they now know how much you can afford to pay and you hurt your negotiations.
So to answer your question a mortgage lender will be the best person to answer your question on whether you can get a loan. A good buyer's agent will have several lenders that they have worked with and can refer you if you do not have someone to go to.
If you would like help we would be happy to help you with all of your real estate needs. Feel free to contact me through my profile here on Trulia.
Hope this helps,