ttc woes

I have stopped medication to slow my arthritis because my husband and I were ready for another baby. I think he forgot how the baby is made though. I have been off of meds for 5 monthes and still not pregnant... My arthritis is getting progressively worse and yet the hanky panky is not happening when it needs to happen! I am trying to not make him feel like a sex object but sex needs to happen! I am stressed, which is causing him to stress which results in nooo hanky panky. Just needed to vent to you ladies because I just hope someone understands! How much longer do I hold onto the hope of getting pregnant?