5 months are not a long time. How old are you ? If you can wait, try a few more months. Or take a normal women body check up and ask for doctor's advice.
I also tried 5 months but failed. I'm now 32, though not too old but my husband is 40 lah.
Trying for 5 months is a short time. Though most of my friends bingo very easily, I know it takes 1 year to bingo after reading books. It's really long time if we have to wait too long. Now, I try my best and shift attention to travelling, buying clothes, working.....and wait for bb.
I also plan to see a doctor in April to see if I need pills and check-up. *I took ovaluation pills last year 'cos my period was sometimes late and now my period is OK.
Let me share some info with you.
Women in late 20s -- 86-93% of them bingo after trying 1 year. They wait for 5-6.7 months to get bingo in average. Every month, their chance of bingo is 15-20%.
Women in early 30s -- 72-86% of them bingo after trying 1 year. They wait for 6.7-10 months to get bingo in average. Every month, their chance of bingo is 10-15%.
Women in late 30s -- 65-72% of them bingo after trying 1 year. They wait for 10-12 months to get bingo in average. Every month, their chance of bingo is 8.3-10%.
Information comes from a book about pregnancy, which is printed in UK.