Help me please !!!

Hello

I have a question my period length is 5 days sometimes 4 days , this month my period stopped at day 4 19th and I had unprotected sex then I got clear slimy discharge mixed with red blood then the next day I got one tiny drop of blood and that’s it. The red dots in the pic above represents the days I had unprotected sex except 25 and 27. On 22nd,23rd and 25th I got brown dry discharge and on 22nd,23rd and 24th mild abdomen cramps with mild pelvic pain, a mild stabbing feeling in my vagina and feeling nauseous at night 3 days now. Today at first I got white and brown dry stain on my underwear then after an hour I got thick sticky brown mucus like discharge, is it normal?!!!