Vajayjay issues

So ever since I gave birth to my son Ive had a lot of changes with my vajayjay. First, I can’t ever shave without cutting or causing irritation. I’m always sore & cut it all to pieces afterwards. I also noticed that I always seems to rip myself open...meaning I could open my legs open wide, pull it apart to shave or clean & at the very top of my vagina I feel it rip open. Then I have a cut their for ever! It makes me itch & irritated. The hair down their is constantly making me itchy or just uncomfortable. I get so irritated from shaving that it hurts to wipe. I seem to stay red & raw feeling. I’ve been tested for STDs while pregnant & I’ve only been with my SO since we’ve been together. So I know it’s not that. I feel like I’m constantly having yeast infections & I’ve even bought over the counter meds that seemed to work but it always comes back when I shave or like I said, accidentally rip myself open. Does anyone else have this issue?