2 periods one month? is this ok coming off birth control

Liza • 31 married 3 yearsl been with SO for 15 years
I came off the shot in may and got my first period June 11th..... missed a period July and August ... took hormones to induce period got one the end of August got a regular period again sept n October. September and October I've had two periods ! Is this normal coming off the shot? Both a week apart!
I was on the shot for a year
Should I worry or wait another cycle?