Lost my temper at work...now I feel awful?

I feel awful.

I am always so professional at work. I work in a very claustrophobic office with three women. The work is very stressful and I had a deadline for the next day. The girls were just chatting and joking very loudly, laughing and making comments about me. Normally we get on okay, but I just wanted to concentrate so I didn't mess up the next day. I asked for help a couple of times but they all basically laughed and continued to help each other..having loud and meaningless conversations.

A grumpy colleague called me and asked about a piece of work I had tried to arrange for them. It hadn't been possible and I had told them this. I tried to politely explain it again...but they got grumpy and had a go, saying 'it was not good enough really'.

I just lost it...I covered the mouth piece with my hand and turned to my colleagues and said 'oh my god, I cannot talk to this C**T right now!" very angrily.They kind of looked shocked and laughed. I instantly snapped out of it and uncovered the mouthpiece and said 'hello? hello?'...he hung up.

I feel dreadful. I have never lost my temper like this...and it was so unprofessional. I am going to call him tomorrow to apologise.