Evening peeps

Just after some help if poss, I have been suffering severe insomnia since learnt I am pregnant so I have not had a decent night's sleep for 18 weeks...I'm pooped to say the least. I have tried meditating music, I have a pregnancy pillow, I have tried a hot bath with candles etc..you name it i have tried it (except tablets). I'm at my whits end, knqckered and that's before the baby arrives, trying to do a days work also is a struggle..does anyone else have any suggestions or recommendations I can try..to get even one night sleep to recharge my batteries xx