is this normal??? very light period while on the pill?

i have been on the pill 8 months now since my baby was born and every month iv had a normal heavy period. last month my period was late... i normally start bleeding 2days after i stop my pill but it took 5-6days last month so i was getting worried... but i just waited it out, i came on and it seamed normal. this month we were going away for a few days so i decided id take two packets in a row so id not come on my period while we were away... about a week into my second packet i had some brown spotting... so i stopped taking my pill because i thought this spotting might not stop so ill just have my period and get it over with... so i stopped but the spotting got no heavier. it was brown for two days only when i wiped, then it was red for 1day only when i wiped, then yesterday brown when i wipe... and today its stopped. . this is not normal for me at all. i normally have heavy periods. can the pill do this? even though everything was fine for 6months