TTC 4 months

my husband and I have been trying for 4 months. Taking ovulation tests like clock work. making sure not to miss an opportunity. I have had a full work up at the doctors, they just say keep trying. We have had 3 miscarriages withing the past 4 years ( we were not trying back then) it's so  frustrating each month a negitive and high hopes. Hearing it can take up to a year makes me cringe. any conversation would be helpful.