If you're hoping to have health insurance by the start of February, Wednesday is your deadline for Obamacare.

Though open enrollment for 2014 doesn't end until March 31, those who want insurance to take effect next month have only Wednesday to sign up.

For people who enroll by January 15 (Wednesday), coverage will begin February 1.

If you sign up between January 16-30, coverage under the Affordable Care Act would start March 1.