<s>[INST] hi - i am 16 weeks pregnant and so far the pregnancy has been without problems. Today i have a rapid HR 106 bpm and i feel lightheaded and SOB - could this be anaemia? Not sure of my BP - but have had sufficient fluid intake this am. Thanks for your time. [/INST] Hi, dairy have gone through your question. I can understand your concern.  During pregnancy anemia is common. Because already there is demodulation. Need of iron is also increased.  Weakness, fatigue are the symptoms of anemia.  You should go for your hemoglobin estimation.  If it is low then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>