I think you will be OK as long as it is just a one-off. Bubs is pretty well developed by this stage & should be able to get through it just fine.

I agree with the others as well. If you feel you need some additional coping strategies, then talk to your midwife/GP about referring you to a counsellor. Also, maybe talk to your partner about having a signal during an argument when enough is enough & you both leave the argument until you calm down.