Period like pains

A little tmi so sorry in advance, me and my SO have been trying for baby number 3 but having a little harder of a time. I’m in my high peak right now and we have had sex everyday so far, today I have been experiencing period like cramps in my lower abdominal area. Its like a mix of period like pain and almost like I’m constipated pain, but I have been going to the bathroom normal and have been gassy also. Every time I sit also I can fill it, little hard to explain but kind of hurts here and there when I go to sit almost as if I were 9 months pregnant getting ready to have the baby and you can almost feel their head about to push out. Sorry for any confusion just trying to get an idea of what this could be and it’s too soon to test yet