Spotting over a week straight..

Hello ladies, so I have pcos, and my periods were never regular, I took about 4 rounds of clomid, then stopped, it wasn't working, ever since I have stopped my periods have before regular! Yay! So I am currently on cd25, I most likely ovulated cd13-17, I bd every other day basically, and ever since my fertile window, I've been having brown spotting, not enough to wear a panty liner, but just when I wipe, sometimes it goes in my underwear, but other than that it's every day, I'm also very moist down there lately, there's no distinct smell, but moist and with brown discharge. I have been having some pinches in my "uterus" or what I think is my uterus.. On the 4th of August I am supposed to have a hsg test done, my doctor said they will test me for pregnancy first, but what if it's too soon to know!? Could I be pregnant, I have no thee symptoms, but I did try this month! I don't want to risk my chance of pregnancy!