I had a really bad breakdown last night

my husband and I have been ttc for almost two and a half years. this month, I thought was my month. my breasts started hurting almost 10 days prior to my period being due, my symptoms were different than what they usually are for my period. I just felt like this was my month. I asked my husband if he thinks I should get on birth control because I get so upset when my period comes. He said at first whatever I decide he will support. I told him, because he is older, that even if we keep trying I don't think he will want to be chasing a toddler in his 40s. He said I have plenty of energy I can do it we will figure it out. I felt a little better about that but we don't have the money for fertility doctor. I want to just let nature take its course. I'm just so worried that it will never happen. I don't know what else to do. I want a child so badly. my husband has children of his own and i want to share that experience with him.