welcome to health care magic,
As per the description of symptoms you have provided, its very unlikely and un-common to get DVT and pulmonary embolism
, with the above mentioned drugs i.e valacyclovir and lyrica (pregabalin
valacyclovir acts by decreasing the multiplication of virus in the cells and pregagalin (lyrica) decreases the neuropathic pain
caused by shingles
..so its no way related with the above drugs.
you need to look in to other causes of DVT and pulmonary embolism
1. Any thrombus in the leg veins due to prolonged bed rest or hospitalization
3.incompetence of valaves in the leg veins
so i advise you to consult a cardiologist
and vascular surgeon to have a color doppler of the venous system of leg and you will be treated accordingly..
hope this answer will be helpful for you..