Feeling 'off' - do I call doctor?

Megan
I'm 33w1d with twins and for the past couple days I've been feeling off/nervous. I saw the babies at my doctor's appointment on Thursday (today's Saturday) and they were fine, but my amniotic fluids have been on the low side for the last month or so. Also, my cervix shortened a ton in just a week (down to 0.65), so my doctors have me keeping an eye out for every little symptom - which I think is making me crazy.
Anyway, yesterday I had increased BMs (6 times) and upset stomach, headache, and was convinced that babies (especially baby B) weren't moving as much. I have a Doppler and could hear both heartbeats, but because of the low fluids, I get nervous that maybe they've gotten even lower, causing less movement?
Do I call the doctor just to be safe? I'm going back for another check up on Thursday. I can't tell if I am overreacting, but I'm a FTM and kinda freak out over everything.