Psoriatic arthritis and methotrexate

HI everyone. I was diagnosed with PA in January after several years back and forth to my GP. I was put on methotrexate orally but have now switched to subcut due to nausea. I did initially feel better but now don't feel the metho is working at all. The fatigue is overwhelming and pain hasn't improved at all. Does anyone else feel like the fatigue is so hard? What else have people tried? I'm not due to see the consultant until August. Thanks in advance and lively to meet you all x