Body Changes at 30

So I turned 30 last year but in the last 6-12 months, there have been a lot if changes in my cycle. For one, about one week before my period, my breast hurt so bad I don't want to move! I haven't been like that since I was a teenager! Now the only significant change that I've had in yet last year that I think could possibly be related is I became a vegetarian. I also get a lot more headaches throughout my cycle (again, like when I was much younger). And I have a lot of cm, pretty much all month long. Oh and my period have a changed too. Instead of being heavy at the beginning and lighter at the end, I have one heavy day followed by the light days and then like a week of spotting. Is this just hormone changes? Am I having some fertility surge?! I am ttc so I hope these are good signs and not bad ones!