TTC after depo-long post sorry

Caitlyn

I was on depo for 7 years. I was supposed to get my next injection Sept 27 2018 but cancelled it because I was getting married a month later and we want to start a family. Well I thought I got my period (3 days) on the 27th of Sept because I had blood. Then I got my period Oct 25- Oct 28th 2018. I am not sure what my cycle length is but I'm wondering if the little bit of blood I had on the 17, 18, and 21st could have been a period. I only noticed bright red when i wiped.. it didnt come back the rest of the day. I know I'm light anyways (before depo) but I'm just wondering if that was a period or something else. I took a test this morning and it was negative. I really want to have a baby, but fear I cant for a really long time. Has anyone else had any issues with depo and how long did it take for you get pregnant after depo???