Longer cycle lengths, symptoms, and weird discharge

My old cycles used to be 31-32 days. N now it's jumped up to 35 for my last cycle n I haven't started yet. N so far my current one is 33 days. I also had sex on my highest day. My nipples have been sore n I've had cramps every now n then n also I've had this discharge that was clear with this really light brown in it. N then it switched to this clearish light pink discharge. It was for less than a day. N only when I wiped n I had a brown spot of the same thing on my undies n I've been really moody.  Any advice?