Dh is sick and has a cold ... !!

Hi ladies so I really need some help here as I'm going crazy. It's my peak period (verified using opks) and I want to make sure we bd during this time. Dh has been sick for a few days now and I'm worried about how his cold medicine is going to effect his sperm? I.e. Will it deform it or make it abnormal? We have been BDing but I'm just really worried. Any comments? Please!