Husband cannot finish..

Lori
My hubby and I have been married for 5 years. Ever since the beginning of our relationship anytime he takes any kind of over the counter cold medicines he cannot finish during sex. He never has trouble any other time. He has never been a one.pump chump lol and has always taken a good while to finish so definitely no premature ejaculation here. Lol. ANYWAY LADIES... HAS THIS EVER HAPPENED TO YOUR SIGNIFICANT OTHER? It is really messing with my TTC this month... I'm in my fertile period and he couldn't finish tonight.. it makes me feel like I'm not sexy enough for him even tho I know what is causing it (well I think I do) I'm also real emotional about it since I been wanting baby #3. I haven't gotten a positive opk yet this cycle and should be tomorrow or next day so I know I have another chance this week if he can finish tommorrow. It usual lasts a few days until he finishes the meds and it gets out of his system. LET ME KNOW IF THIS HAS HAPPENED TO YOU PLEAS2.