I have understood your query.
Condom, though gives protection against many sexually transmitted infections (STI), there are some infections which condom cannot give protection against. Particularly if there are infective lesions around the genital organs, open lesions in groin or on lips, condom cannot prevent them.
There are good many chances that you could have been infected by some STI in spite of use of condom.
Moreover, you were not fully in your senses due to the effect of alcohol as you have mentioned. So you do not know whether the condom was put on your penis by her properly. Hence you cannot rely on the condom protection fully.
Please report to a STI specialist, get thoroughly examined clinically along with some investigations to find out whether you have caught any STI. If so, please take complete treatment to get cured.
Please understand that most of the STIs if diagnosed and treated in time can be cured completely. Otherwise some of them can cause many complications including
infertility or threatening the life too.
I hope you will take my advice rightly.