So scared--in need of reassurance

I am 5 weeks and 5 days pregnant today. I had a miscarriage in May 2015 and another in December 2015. Today I have had mild cramping that feels different from the cramps I've been having. I also noticed some pink spotting when I wiped after I peed and a couple TINY clumps of what looked like some sort of tissue in the toilet. I'm scared I'm having another miscarriage, but my OBGYN is closed and I don't want to go to the ER unless I really need to. I'm not in much pain, the cramps are mild but noticeable. And the bleeding is very light. But I'm still very worried.