Hi Sweet Pea,
I think what you need to do is set up a cashflow spreadsheet in excel (I use LibreOffice - it's free).
Mine has the week across the top, then first row is balance in account, second row is your pay, third row his pay, then total income, next you put the outgoings - rent/mortgage, insurance, elec, car, cc bills, groceries, kids' activities, whatever is appropriate to your situation, then total expenditure.
Then add opening balance to total income, subtract total expenditure, gives closing balance. Next week's opening balance = this week's closing balance. You can fill it forward for as many weeks as you wish.
You can then see what will be the balance any week. What I do is put in estimates - estimated elec bill, visa bill, etc and then when the actual figure is known I put that it, then I can see whether I'm tight or have a bit spare in any given month.
I can send you a template if you like, just respond here or pm me. I've had mine running (new one each year) since about 1997, through good times and bad
Sybil