TTC😩

Me and my boyfriend have been TTC for 4 almost 5 months and I'm starting to give up hope I have been taking prenatals and he's taking something for him and we have tried preseed but nothing seems to work we've done it on my most fertile days and all I've been getting is bfn's and it's staring to stress me out and he keeps talking to my stomach and calls it the jellybean factory and it makes me dad because he would be such a great dad but I haven't been able to give him a positive and it breaks my heart I just don't know what to do we've tried so hard and we want this more than anything.