I need answers, AM I PREGNANT REPOST?

I posted a question not very long ago and got scarcely any responses. I'm hesitant to take a test just yet so I need some opinions! I am 9 days past my ovulation date and me and my husband had unprotected sex on my ovulation date a day after and a few times the week before. About 3 or 4 days ago I began feeling extremely fatigued and my breasts became very sore and felt much fuller and heavier. I have had bouts of slight dizziness and a day or two ago I began feeling dull cramping and strange twinges on one side of my lower abdomen. I have had very vivid dreams and my lower back has been slightly achey as well as my legs . these symptoms have been going on for about 4 days and as of today my period isn't supposed to come for another 5 days. So I feel as though it's too early for pms symptoms especially since I never get symptoms this early. This morning I noticed about 2 spots of brownish dischargey blood in my underwear and I never spot before my period. Could this possibly be implantation bleeding? I would really appreciate lots of answers and view points PLEASE