To test or not to test

I'm afraid to test it might be too soon. I've been really moody (as per hubby), lower abdominal cramps for like 2 weeks, breast are extremely painful, Ariola's are darker, bbt is 99.5 most days and feeling a little nauseous. We are ttc #4 misscarried back in 4/14 and our youngest is about to be 10 so it's been a while. Any advice would be greatly appreciated, thanks ladies.  What would you do