Cycle day late normally 5 days day 3 still lite a lil heavy day 1 sex active daily lots of cervical mucus all throughout?

Check a pregnancy: If your cycle is late check a pregnancy test. If negative I would still encourage safe sex and have another pregnancy test if still late. Otherwise having a lot of cervical mucous without pain or smelly discharge is not specific.

Question?: Although you have not asked any specific question, I am guessing from your list of observations that you are concerned about a period that is not typical for you? Your menstrual cycle can be affected by many factors: pregnancy, hormones, stress, weight changes, diet and exercise - to name a few.As you are sexually active, I'd recommend a pregnancy test and then f/u with your GYN to further address