A little worried

Due to myself having a heart condition, that was undiagnosed for a very long time, I have something called tachycardia (increased heart rate) my heart normally sits at anywhere between 100-120 normally. Now when I was first trying to get pregnant in 2021 (sadly miscarried) I had myself checked out, no doctor I’ve been to has said that my heart condition would be an issue. Just that I have to be careful with stress and my anxiety, so last night around 2:30 I had to take my inhaler (I’m also asthmatic not bad) since being pregnant I’ve needed to have both a inhaler and a preventer to help, my asthma has gotten worse since being pregnant. Anyway last night I took my inhaler the recommended 2-3 puffs every 4 hours I only had 3 puffs because my breathing was bad, I sat for 5 and allowed my body to let the medication do it’s work. When I laid back down my heart rate went crazy. Now before anyone attacks me I thought I was having an anxiety attack so I did my breathing exercises and it eventually stopped, once it stopped I sat for about 10-15 minutes just breathing and making sure I was okay. I laid back down and my entire body went completely numb, my daughter began to kick vigorously which is normal but she normally only kicks 2-4 times a night. The best way for me to explain it I felt like someone had slipped me drugs and I was completely out of it, my head was spinning, my body was shaking, I could barely function to call anyone. Everything happened so quickly I felt sick and almost passed out, I have been told that my iron levels are pretty low and I have an appointment on Tuesday for some more tests through the hospital. Because I’m being screwed around by my doctor, I’m wondering if it’s because of my iron or if there’s something else that I haven’t been told what do you think

Please don’t hate, I honestly didn’t think anything was wrong I’m doing my best as a first time mum