Uterus pressure

A

Since this cycle started I’ve haven’t been paying mind to every thing I feel. But today I must say I feel so uncomfortable with lower back pains and pressure on my uterus. I’ve felt uterus pressure before while I was a few months pregnant but never during my ttw. According to the app I’m 5 dpo but I feel I’ve might’ve ovulated earlier due to what my body was doing. Has anyone felt this way before? This discomfort is really annoying.