longest cycle I've had...

been dealing with endo and cysts for 2 years after getting off depo for a year , started periods again normal cycles 28. my husband and I have been trying to conceive this month has been weird, got a cold out of no where it went away fast and now , decided to take a test was negative , still no cramping or pms symptoms on cycle day 35? anyone experience the same with having endometriosis??