Running and afraid I might have a stress fracture... 25 weeks

Runners, have any of you ever experienced a stress fracture in your foot/toes on the top? The other day I was doing my usual 2.5 miles and the last 1/4 I stared to get a real sharp pain at the top of my foot around the second toe bottom knuckle. It felt so inflamed. I shower, go to work and it feels better. This last week, any time I am walking too much, standing on my tip toes or my feet kind of slam to the ground, it feels on fire again. Today, I decide to run again to see if it really is anything and this time, 1/4 mile into the run, it starts hurting so bad! I finish my 1.5 miles hoping that after I warm up, it will feel better but NO! It has been throbbing all day now, so so bad.... But I don't want to get it checked out by the ER because I keep being told they won't do x-rays because I'm pregnant AND it will take me over a month to get into my doctor... All I can take is Tylenol and ice... Which does nothing.... HELP!!!!