Constant Nausea Better after Eating

For the past week, I have felt constantly nauseous though I don't necessarily feel like I'm going to throw up. It doesn't bother me as much at night, but persists all day. It hasn't affected my appetite and seems to be better for a while after I eat, but then it comes right back again. I've had acid reflux issues for a while, but nothing pepcid couldn't handle. And I've never had nausea associated with it.

I am fairly healthy. I do have problems with iron deficiency anemia due to fibroids. I take iron supplements during my cycle, but haven't been taking them recently so I don't think that is the cause of my stomach problem. I also have allergy problems that seem to be worse this year - drainage, congestion. Off and on I've had some trouble with my vision. I can see ok, but sometimes have to concentrate to focus when reading or working on the computer.

I'm frustrated by the nausea but am not sure it is bad enought to go to the doctor. I can't afford medical bills right now. Has anyone had similar problems?