Could being on Plavix cause my recent reaction to the sun.

It has been confirmed that I am allergic to the Daisy family and Resin but have tried not to come into contact with these. I noticed last year that I had an extremely bad reaction to the sun, after two weeks in France. It spoiled the latter part of my holiday. Even covering up didn't help as the general heat seemed to penetrate my clothes. Neither my normal, prescribed, cream nor antihistamines helped. Infact the, heavy, sticky cream seemed to make the problem worse.
I think that Plavix could be the answer as it has possibly altered my blood. A rash is mentioned in the possible side-effects but I have had no trouble during the winter. It may be a mixture of the Plavix and the sun! Has anyone else looked at any tablets they are taking?
Are we all going mad? I don't think so!!
Doctors should be made to suffer all symptoms and diseases. It may help with their diagnosis!! I don't really mean that but it does make you angry when your symptons are belittled.