Irregular period post baby?

Mackenzie
Okay so I had my first baby girl 5 months ago, am breastfeeding and have had a couple periods since then, or at least bleeding that presented like a period. I was supposed to get my "period" near Valentine's day and I haven't had one since January? Have always had protected sex with condoms since baby girl. Really not trying to get pregnant....I know periods can be irregular while breastfeeding, am I just thinking too much into this? Lol, thoughts?