Pregnant or Period coming?

13 days late, I have been having some sharp pains on my right and left side, my lower back hurts! My breast have been a little tender! My hip literally hurts in spurts (not all the time but just in spurts) I haven't been trying to read into it! I usually get cramps a week before my "friend" arrives... When I went pee yesterday I saw a very very very light red when I wiped, and I assumed my "friend" was coming BUT still nothing! I tested a day after I missed my period but got a negative tested when I was a week late but got a negative? Any advice would be appreciated! Thanks!!