Help me please!!

My husband and I have been trying very hard to have a baby. We were pregnant before and while he was away with the navy we lost our first baby at three months along. I am two weeks late and have lots of pregnancy symptoms. Cramping, nausea, vomiting, sleepy all the time and swollen and tinder breast. I'm very scared because my husband heads out to sea in a week and worried that if I am pregnant that I may lose this baby too. What should I do?