Hi my name is XXXXX XXXXX I will be helping you today with your tax question. You can absolutely do your taxes without involving your husband. You can file married filing separately, you need to list your husbands name and Social Security Number on the tax return, but nothing about his income and it is not going to trigger any inquiry into your husband whatsoever. What you need to do is get together all of your documentation for all income and any expenses you incurred for 2010, 2011, 2012 and then you can prepare your 1040 Income Tax Return using schedule C for your income tax and schedule SE for your self employment tax (social security and medicare).
You should do this as soon as possible as the longer you wait the higher any penalties will be. But your return will not affect your husband at all and will not get him in trouble.
Thank you so much - I've been putting this off as this was my main worry. I'll get onto it soon now. Thanks once again - this has been worrying me constantly!