I dont get you, you are married, he stays two days at home and always on blowjob. Ar you a male married to a male or a female married to a male? If you are female, where is the penetrative sex? Itstarts at blowjob ends at blowjob, thats what you are saying?
If he blames that you are bad in blowjob, the would he cum so early? Again, if he ums early, rather than blaming you shouldnot you blame him for having a premature ejaculation?
What is the reason for not having anysex, other than you are male, there is other reason that he has someone else to take care of his dick for the 5 days he is out of home. Have you checked on that?
Closing with a positive note, if he is out of home, not ucking anyone, not masturbating, its very likely that he wont be able to contiue for any long time. He will cum very fast as the sperm with semen were about the release. But on teh second day, he should have taken a bit longer time.