Time to see the dr? :|

Sophie • Sophie, 21. Engaged to wed 18.06.2017 . MC May 2015 :(
Been TTC, but I'm very irregular no reason behind it according to Doctor. 
However since October I had spotting for 4 days, in January I had light bleeding and spotting  but not enough to call it a period I don't think. 
And for the past 9 days now I've been bleeding it's ranged from pink to bright red to dark red back to pink - I've no cramps or any other period related symptoms at all. I've only had a bit of nausea. 
My usual periods would be extremely heavy and I would be in a LOT of pain and this is just so unusual for me, anyone experienced something similar? I'm starting to get a little worried