Left feeling really confused.... 😔

Louise
Hi ladies, 
So, my fertile week was 3 weeks ago, and I'm about to go into my next one starting tomorrow - according to Ovias calculations - I haven't taken a pregnancy test, but I was getting sickness most mornings last week, I'm constantly tired, my breasts were tender and painful and I generally got that "feeling" I was pregnant. Then bang - last Wednesday I started to bleed, and I bled for 5 days on and off. Is this a period? Or is this just vaginal bleeding? Before I take a test I wanted to ask around some of you on here and see if you had any advice for me. 
I look forward to hearing from you all. 
Louise XÂ