Brown spotting missed period by two days!?!!

Alyssa

But I have cramped on and off for those two days! I just knew my period was going to start this morning and once I finished my shower the cramping stopped and I haven’t had any spotting today! I’m currently on CD 38. My cycles are usually 36 days at the longest. I’m on clomid and my dr said if I didn’t start by day 36 to call. Should I call them or just keep waiting it out? I haven’t taken a pregnancy test because I’m afraid of seeing another BFN. Could I be pregnant or is this just a delayed period???