B.C.
I once read in an old medical book that birth of a baby was positive proof of a pregnancy. Duh. It wouldn't hurt to take prenatal vitamins. See your Dr soon as possible to find out if you're expecting. That it would take 5 yrs of trying for someone in their 20's seems unusual. A blood test will tell what's going on. Good luck!
Additional comments:
I'm so sorry. This can be such a roller coaster - high hopes followed by crushing disappointment. You and your husband should see a fertility specialist asap. There could be a combination of difficulties (on your side and your husbands too) that need to be overcome in order for you to conceive. It took us 4 yrs of trying (I was in my 30's) before we had our son, and our first try with IVF with ICSI worked like a charm.