Hi, I am a 27 yr old female. I recently had a baby 5 months ago, and I also work in a factory where i do have some exposure to chemicals or fumes, but not extreme. I have been there 5 years. That being said, I have had several strange symptoms and cannot seem to find any explanation. They are:

All of these symptoms seem to be MORE prevalent at work. I will just be sitting there working, and my eyes will just kind of go out of focus (fairly regular, mostly throughout the second half of the day, after I have eaten), accompianied by dizzy or lightheaded feeling a lot. My eyes also feel strained a lot throughout the day as well as feeling nausea quite a bit.
After the baby, my first few menstrual periods were normal, and then my last one, which came at the scheduled time, there was hardly anything there! I checked two different times to make sure I wasen't pregnant.
I also seem to be more sensitive to smell as well as noise - the loud noise hurts my ears more. Again, these are more noticeable at work.
Any ideas? I am not really in the financial state to have anyone run a lot of tests, since I have such a variety of symtoms. Hopefully you can help! This has been going on for a few weeks now.