Feeling sad:/

After trying for about 4 months to conceive my husband and I decided that November would be the end of trying because our other 3 kids are November and December babies we would really like to change it up, so as of today I was 5 days late, getting all excited and about to make the trip to get a home test, and bam all my excitement went down the drain, now I just wanna cry, it took my husband 4 years to finally be ready to have another baby and now I'm just not sure it will ever happen:/ I'm followed all the steps what went wrong???