Razor burn :((

So these past two times when I shaved my vagina I’ve gotten extremely terrible razor burn the following day. The day of its completely fine. But the following day oh my god. In the morning I was fine, a little sensitive but by the time I got home tonight it’s super sensitive, ingrown hairs pimples galore. Idk why this is happening all of a sudden..I used to shave no problem but my skin seems super sensitive! I’ve even used a new razor blade. If I give it a few days it calms down but OMG help!!