Start date from recoup pay is April 1,2017 today is the 3 when will it actually hit my bank account it's not there yet?

Please restate your question. What you are asking is unclear.

I'm not familiar with the term you use. However, if it is money coming your way say starting 1 APR, it needs to accumulate so your first deposit into your account would be the first of the following month. Same thing goes for retirement, etc. that actually pays the following month.