I have been taking Doxycycl 100 Mgt twice a day for 9 days. I'm ...

I have been taking Doxycycl 100 Mgt twice a day for 9 days. I'm experiencing some nausea..what I didn't expect is the extreme fatigue and dizziness. I tested positive for Lyme disease and definitely want to get over that. Not sure what to do..is this is a normal side effect of the drug? Should I contact the doctor? Don't know what to do?.. I have had other allergic reactions to Cipro and Biaxin (but I know there are a different class of drug. I seem to do better when I eat and drink a lot of water throughout the day. JFJ 7/25/09