Help...? Weird bleed??

So I'd  been having period like cramps for 5 days. Then last night I went to the bathroom wiped and assumed I'd come on 3 days early as wasn't due on till 12th. There was a mixture of brown & red. Put a pad in and woke up this morning with nothing on. Then as the day went on nothing has come out onto the pad others than a few sploges of brown TMI and some blood when I wipe. Should I be concerned? I've been trying for 3 months and don't know whether this is normal or whether I should do a test?