Hello, You did not mention if you ever had successful intercourse or consummation. Even with an intact hymen, pregnancy is still possible. This can happen if the semen is deposited on the vulva during the fertile period and also when the hymen is lax enough for intercourse to occur freely. If your husband is unable to maintain erection, he needs to get evaluated and counselled. If the hymen is the hindrance to proper sexual activity, simple surgical procedure can help to cure. Hope this helps.