Headache for a week does not necessarily mean a brain tumor
Neck discomfort and cramping from a problem in the neck (such as muscle spasm or strain) can commonly cause headaches. In the context of a bad cold where one can get muscle aches and pains, it is not unusual to have headache, especially if you are prone to tension-type or migraine headaches. Headache can also cause eye or behind-the-eye pain. Migraine headache are quite commonly unilateral and throbbing.
In the first trimester of pregnancyit is difficult as you say to treat headaches. Clearing the infection should hopfully resolve the headache. Keep following closely with your doctors. Avoiding triggers that make the headache worse, eating and sleeping well are important to control the headache, and a physical therapy assessment of the neck may help.
Red flags that a headache is more serious are 1) fever and neck stiffness 2) impairment of consciousness 3) 'the worst headache of your life' 4) focal neurological deficits ie weakness of one side of the body
Good luck
You can see a comprehensive list of symptoms in peer-reviewed journal articles under "Symptoms and Characteristics (peer-reviewed literature)" on my website:
http://www.openeyepictures.com/underourskin/uos_resources.html
There is very good neuroLyme symptom info on his site, too. In my opinion, IGenex, which specializes in tick-borne diseases, is the only reliable Lyme lab, because they test for multiple Lyme strains, not just the B31 Shelter Island strain, and they report on the most specific Lyme markers, the 31kDa and 34kDA bands. IGenex has recently passed Cal., NY, and CDC quality testing with flying colors. You can download the IGenex testing forms from my website; give these to your MD if you want to use this lab. MDL isn't bad a bad lab either.
http://www.openeyepictures.com/underourskin/uos_resources.html
Fewer than half the people with Lyme ever see a tick bite or a rash. The longer you have Lyme, the harder it is to get rid of. There's one really good Lyme doctor on Long Island who specializes in pregnant women with Lyme, too.
I would strongly urge you to run to a Lyme-experienced physician, which you can find by typing in your location to "Flash Discussions", then "Find a Physician" here:
http://www.lymenet.org/
And you can also enter your symptoms under the "Medical Questions" section on this site, and you can see what other people with similar symptoms think.
KrisKraft
http://www.lymediseasefilm.com/
By the way, what was the reason for your previous CT scan?
However, the headaches I am having now are more in the neck area and are worse when I bend over. Also, I have discomfort and pressure behind my left eye and have had this bad cold for 5 days now. I have also thrown up a couple of times throughout the 5 days but I don't know if that is from the pregnancy of feeling sick. Like I said I went to the eye doctor in Feb and he said that everything looked fine but I didn't know if eye doctors can diagnose tumors in the brain.
But why are you so worried about brain tumors at such a young age? Is there a family history of these, or has some thing suspicious shown up in other tests?
Personally, unless there's a good reason to suspect a serious disease or disorder to suspect, I recommend seeing a good pain doctor or neurologist once your cold symptoms pass.
If so, you might want to use a thin and firm pillow instead.
This would lower your head to a more natural position also aligning your neck vertabrae more naturally.
That's some advice from an amateur.
Of course, you shouldn't just take my word for it.
Go see a licensed doctor when you can.