Thanks for your question and concern. But it is difficult to say whether you are contracted with herpes virus or not. It is possible that you may have contracted with it, as you have done oral sex with your partner. You can get affected with herpes type 1 virus, if you have oral sex with an affected person. This is because herpes type 1 virus is transmitted mainly through saliva and affects mouth and related mucous membranes. It is common that affected people may not recognize themselves to be carriers of the infection and transmit the infection to others who have sex with them. This is because, HSV infection can stay dormant in some people without causing any outbreak or visible appearance. Anyway, a doctor can easily recognize a herpes blister from allergic blisters through a simple physical examination. You can also go for lab tests to find out infection. However there is no medical cure available for genital herpes. But there are certain antiviral medicines available like acyclovir, to treat sores and blisters relieving pain. They can relieve the severity of infection to certain extend. Hope my answer helps. Take care.