sad, disappointed, and worst cramps everrr!

Marisa 🌴 • RN 👩🏼‍⚕️💉 Married. 2 MC's and 2 ectopics. Blessed with a beautiful daughter & twin baby boys 💖💙💙
Damn AF came again this morning. We tried so hard last month, used OPK's finally got 2 smiley face peak days, and BD'd 5 days out of 7 in my fertile week. Wtf can I not get pregnant?! :( 
I lost 1 of my Fallopian tubes after an ectopic pregnancy in May of 2015. And haven't been able to get pregnant since. We really weren't "trying" technically until last October, but we weren't preventing it for the past year and a half and were hoping it would just happen. I have a 6yr old daughter, and have since had 3 miscarriages, and 1 ectopic. Getting so discouraged. I'm 31, almost 32 and my husband will be 37 soon. I just feel like everybody around me is getting BFP's and my biological clock is running out :( Sorry, just needed to vent. I'm sure I'm not the only one feeling this way. 
Also, my past 2 cycles I have had the worst cramps of my entire life. I could literally cry from pain right now.