Breastfeeding and no period, pregnant?!

Hi all,

Been a long time since posting on here!

I've been exclusively breastfeeding my little boy until he was about 5.5 months and we started weaning.

He's never had formula or a bottle, and doesn't like dummies.

He's really enjoying his food, so eating little bits and pieces at meal times with us, 3 times a day. Since he's been doing this, he's feeding less during the day and for a shorter amount of time. Until two nights ago he was feeding all through the night.

He's now 7 months and I haven't had a period since before falling pregnant with him, but I'm starting to feel like I'm either pregnant again, or my period is about to return!

I guess I'm asking whether any of you have fallen pregnant again before your period has returned, or whether it just sounds like my period is returning?!

Thanks in advance!