Need some encouragement!

We're on our 5 month of ttc and I feel very frustrated!!! My husband doesn't seem to be as emotionally drained as I am but it's starting to get exhausting! This will be our 4th pregnancy lost our first child to a miscarriage but we have two beautiful babies now my son is almost 7 and my daughter is 4 and it was super easy to conceive them idk y it's so hard to conceive now 😐 I just need some encouraging words from mamas out there! No negative comments please.