Does this sound like an early pregnancy symptom?

I know this is a lot of info, but please bare with me because I'm super confused!! I am not really trying to concieve, but I would be okay if it were to happen. My boyfriend and I had unprotected several times on day 23 of my 35 day cycle. My cycle tends to vary a bit, but 35 days has been fairly consistent these last few months. I would have thought ovulation would have already occured, so I didn't think anything of it until 5 days later I had these weird twinges in my lower right abdomen. For two and a half days I had a constant dull ache in the area that seems to be where my right ovary is. At one point it felt like a pulling feeling, almost like a strained muscle. It was so strange because I've never had a twinge like that before, and it was honestly all together an experience I've never had. My period isn't due for a few more days, and the ache has ended for the moment. I don't believe this was simply ovulation pains because it was so late in the cycle and also I've felt that before and this was something I've never experienced. Any opinions??