oopsie

alright, hi, yes...long time, no see. It's seems that i have a slight issue. okay, so my LMP was 1/6-1/11 and I ovulated somewhere around the 20th-22nd...no biggie..except I had sex with a friend on the 18th and it wad unprotected and pull out didn't happen. Now I'm not one to freak out or anything but I have had some odd things happen. On the 27th, I had pink bleeding or spotting for like an hour? AF is due the 3rd or the 5th, I've never had that before and my back has just been constantly aching but nothing like my PMS so that's what is concerning. I have had very mild cramps to where my period ones are unbearable and I feel awful. Also I've been peeing at least 4x an hour. (I don't have any STDs or infections). My breasts feel so heavy and my nipples are tingly, these aren't my PMS and I've had some thickish, white discharge that doesnt itch or smell bad so..Please tell me when I should take a test.