Feeling incredibly guilty

I have a 20m old and I'm 33 weeks pregnant. I hate being pregnant it literally destroys me. I either feel like absolute crap, really exhausted, in pain or constantly running to and from the toilet. Every other day I'm literally lying on the sofa unable to move because I physically can't move without feeling sick, being in pain. I find it so difficult to olay with him, thankfully he's good at independent play, when we go out I find it difficult due to it aswell. I just feel absent even though I'm here😥