baring few drugs no drug is absolutely safe in pregnancy.
looking at the no. of drugs u have been exposed to and also the thing that you had taken emergency contraception warrants caution.
its upto you to decide whether to cont. the pregnancy or not taking into consideration the risk that your baby might suffer.
take ur own decision.
here is list of some of the drugs that might cause comp.
Angiotensin-converting enzyme inhibitors and angiotensin-receptor blockers
Aminopterin, Androgens, Bexarotene, Bosentan, Carbamazepine
, Chloramphenicol, Chlorbiphenyls, Cocaine, Corticosteroids
, Danazol, Diethylstilbestrol
(DES), Efavirenz, Etretinate, Isotretinoin, Leflunomide, Lithium, Methimazole, Methyl mercury, Methotrexate, Misoprostol, Mycophenolate, Paroxetine, Penicillamine, Phenobarbital, Phenytoin, Radioactive iodine
, Ribavirin, Streptomycin,, Tetracycline, Thalidomide, Tobacco, Toluene, Tretinoin, Valproate, Warfarin