Having a second Child


We already have a 13 month old that needs a lot of attention but are TTC for a second. On bad days we are both so tired we doubt if we even should have a second. Our families are saying it would be way too much for us to handle. My Fiance is self employed and therefore he has a lot of work. And I will go back to work. I'm 35 he is 40 and we don't have a lot of time to wait it out.

Mommas who have been or are in similar situation, is it really so bad having 2 less than 2 years apart?