My co workers reporting me

im a care assistant and i told my boss that i am pregnant about a week and half ago. this is my 3rd pregnancy (2 miscarriages) and naturally my news spread like wildfire around the home. i work both day shifts and night shifts and the only thing i refuse to do is lifting people from the floor (it says i cant in my risk assesment). my first shift before i went to the doctors i had a bit of bleeding and as i didnt want to agrivate the situation i said i didnt want to assist the resident in question on my own. i ended up leaving the shift to go to the hospital anyway. since then i have had day staff reporting me for refusing to work (completly untrue but i guess my face doesnt fit on the day shift). for the past 4 shifts ive been doing night shifts and not once have i refused to do anything in fact i am trying to prove i deserve a perminant place on nights (as i detest days) so ive been working myself extra hard doing everything im expected to and more all the while these coworkers i thought i could confide in have been running to the office saying i shouldnt be doing the nightshift either because its quote on quote 'daunting and an extra stress to work with me' all the while im busting my balls doing the majority of their tasks too! im getting seriously fed up and really do not know what to do. ive broken down since coming home from my shift as ive done nothing to prove to them im not capable or worthy. All in all i feel pretty shit