Husband wont accept apologies over fight for silly thing?

Im 26 and been married for a year, dated 2 months bec of cirstances out of our hands. No kids, married in love, lately been fighting for money. He wants to save money to buy a house, we prob move out after he finishes school. (3 years). None is big spender but i like to travel and since I have no debts I bought a ticket to NY for 1 week to renovate my foreign pport, stay with a girl friend & have some fun & it has been hell with him ever since. I think i screwed up a little, but we are ok now and i apologized but he keeps bringing that up and using it for every little fight. Last arguing was bec I unplugged his razor after he told me not to, i didnt wanted to spend so much electricity, he hasnt spoken to me in 3 days even after I apologized. I feel love is dying. He is a good man, never violent and very responsible. But very stubborn too. We have potential, he cant accept that ppl screw up and i am sick of being the one who has to swallow the pride. Help!!!