My next period isn’t due for 10 days...

I started to cramp literally an hour ago then within the hour I went to the toilet, wipe and there’s blood but it’s kinda wet if that makes sense??

My last period was 22-25 November which I also started 9 days before expected... I’m never one for being early but I am also trying to conceive so it’s throwing me off now... my cycles usually last 30-35 days but are clearly getting shorter.. I was on the depo injection but came off March 2016, so is this just my body getting more regular or is it something else??