i had a cold recently too hun and it took ages to clear up, ear was blocked for well over a month after ab's for an almost ruptured drum.. and the coloured snot i had... ewww!
having said all that im not pregnant and feel almost as tired as you do, but if i were pregnant and not eating meat id definatly get my iron checked, your midwaife should be able to organise it for you, otherwise try a different iron such as liquid one as it absorbs better, also take it with orange juice and avoid the food that stop you absorbing iron such as dairy and caffine hope your better soon xxx