Question r/t period after 1st cycle of Clomid

Ashley • Happily married for 3 years. 2 angel babies. Our 1st FET = BFN. 2nd FET = BFP! Expecting our miracle September 2017!
Hi! So, I have a question for anyone who has experienced what I am experiencing and I appreciate your help! I took my first round of Clomid 100 mg (cycle days 3-7) last cycle. I started light brown spotting on cycle day 29 and have been spotting for the last 3-4 days. It's enough to need a panty liner but not a tampon. It has been brown spotting. We are suppose to be doing another round of Clomid. I've read that CD1 should be when you have bright, red blood flow. I normally do spot for a day or two before my period, but so far I've been spotting for longer than that. Normally my cycles are 34 days. 
Should I wait a few more days and see if I get bright red blood? Do I start Clomid? I just don't want to be late on the Clomid, but also don't want to take it too early. 
I'll most likely call my OBGYN Monday, but wanted to see if anyone has experienced this with Clomid? 
Thanks for listening!