I am pregnant and I have nerve pain all over my face. What could it be?

Hello doctor,

I am a 28-year-old female with a height of 5 feet 5 inches weighing 140 pounds, healthy, non-smoking, non-drinking female with no drugs and no other known health problems. Two months ago, I was exposed to HSV-1 and then seven days later, I was tested positive for HSV-1 oral with IgG of 1.51 and IgM confirming a recent infection. The same day I started taking Acyclovir for three weeks and then one month later, I was switched to Valtrex (Valaciclovir) at 1 g twice daily. I started having HSV-1 facial symptoms, but never any outbreak. It started with tingling lips and then nerve pain running all over my face, cheeks then under my eyes. The last two weeks, the nerve pain has gradually increased from my eyes to my head, mainly at my trigeminal ganglion. The pain is 5/10 and is now on my forehead and the top of my head. I am still taking the Valtrex but would like to know is this common with HSV-1? What should I worry about from a neurological standpoint? Five weeks later, I still have never had a cold sore outbreak. Today, I went to see a neurologist and because I am four weeks pregnant, he suggested that I not have an magnetic resonance imaging (MRI) and not take neurologic medicines. He basically said I should just wait to see if it impacts more than the triglycerides (TG) and wait to see if nerve pain goes away. Can someone please help me? Should I be worried about herpes encephalitis? In the past, I have been on Gabapentin.