Period or not

Hi , 
Sorry if this is TMI but I have to ask. 
I have a 34 day cycle and i usaly get really bad period pain and mideum to heavy flow. But this time i had some cramping a week before my period. It felt like a period but no blood. Then i my got my period a day late (at the right time) with no pain or cramping. The fist day was light the next day is mid/heavy but almost watery /slippery. Then that same night and the next day its only noticeable when i wipe and it's a brown colour. I'm not sure if it was my period or not. I also have slight tightly nipples and somtimes sore breasts (get a pain every now and then). We are trying to convince.

Any help would be much appreciated ☺