Feeling worse after meditation

Hello everyone! Is it normal to feel anxious or irritable after meditating? I’ve noticed that this has been reoccurring for me, as it has happened to me about few times this past summer and recently earlier today. Does this signify that my mind or consciousness is just uncovering past trauma or emotions that have been repressed, or is it a sign that maybe I’m not doing something right or maybe I have the wrong mindset or intention I’m while meditating. I’ve been meditating since the end of last may. Initially I was meditating while listening to healing frequencies but within the past month or so, I’ve began meditating and doing breath work in silence while I’m outdoors or in my car. I used to meditate for about 15-30 minutes but now I do it longer for about 45 minutes now. Could anyone please give me some insight or help regarding what I could be doing wrong? I seek understanding and desire in wanting to grow spiritually and better myself as a person