Period or Possibly Pregnant???

So I need opinions. My last period was March 9th through the 15th,and my calendar says I’m not supposed to start for another 9 days but I’ve been lightly bleeding brown blood for 4 days now. This is day 4,and it’s ONLY when I wipe,and when I pee the only thing that comes out is small brown clumps of what I would assume is lining or tissue of some sort but that’s it. I don’t know what to do. My husband and I have been TTC for 2 years...should I take a test? Call my doctor? See what happens? I don’t know what to do or think. Only general aches and pains that I feel are breast tenderness and constipation. The constipation is the only unusual thing for me. Breast tenderness isn’t just because I get that a few days before my period,during and a day or two after.

UPDATE: I haven’t taken a test yet,but I’m still bleeding brown blood and it’s a little heavier. I guess at this point all I can think about is I just didn’t conceive this month either and it’s my period showing it’s ugly face once again. 😞