5DPO cramping on left side... inplantation?

So if I'm correct, which I am fairly sure I am, I am 5dpo. Today I woke up with a cramping, pulling, pinching feeling in my uterus on the left side. My cervix is still high, but closed and I would say softish, like a medium hardness maybe? I just came off bc, but was only on it for 8 months. Before my cycles were 34 days long, but I ovulate on day 15, giving me a really long luteal phase. So any ideas of what this is? I don't want to get hopes up because I don't think it will be this easy for us to get pregnant, but I never have cramps and never have had this feeling.