ok @Isitspringyettho you really don't want to hear any possible solutions, so i'm not sure what you want from this thread.
If you can't say where you are or what you do everyone's advice giving possiblities are restricted anyway.
But. You must phone your employer, not text. That is the professional thing.
If you are in Europe the chances are your DHs employer must give him time off for this, even unpaid. If he has been there a long time with no issues, and he is so valuable to them, he is not about to lose his job.
So, think calmly and sensibly now. Phone your employer. Start looking around for babysitters/childminders who can handle your sudden needs, and when your DH is home work out between you what you are going to do when this situation happens again.
Tip: he is a parent and he must step up. The alternative is to do what many of the pp (me included) have done: work when your DH is home.
Also if your DH is so vital to his boss, he should use this to negotiate better terms. Including time off for sick kids if not already available, or more money which will make affording paid help easier.