can someone please tell me if bc pills make periods light?

i’ve been on junel fe 1/20 for over a year. i take it the same time every day. i have never missed my pill.

i occasionally have sex with my boyfriend with a condom and pull out. usually my withdrawal bleeds are medium heavy, but the last two have been so light ive only need a liner. i’ve gotten my period again, but it is just as light as the two before. i’ve taken so many tests, all are negative.

is this normal ??