Omg i cant stand this its killing me!!

Ugh!! I'm 16 weeks and I have lost loads of weight and the doctor didn't like that! Even though I was 258 when I started out I am down to 210 and in a month! anyways, I have low low blood pressure 90\50!! And a uti! I am so nauseas still! And have absolutely 0 cravings 😭 I am so dizzy and tired and lightheaded and just all around feel like death! I had a apt today and I got to hear the heartbeat and it just made the problems disappear for a little bit but I'm having such a hard time getting excited! 😟 I love my baby but it seriously feels like it is trying to kill me😞 I know that's terrible to say but I really could use some encouragement and maby some experiences with this? We did try for this baby and I knew it would be semi hard but Holy cow lol worth it but such hard work! I also have a 2 year old daughter. because of the dizziness I have fell with her so any advice with that as well? I don't want to be bashed I am so thankful of my baby! I mean that heart beat was just a blessing! 😍