Need advice. What are the dos and donts?

My wife and myself are trying to have a baby. I am 43 while she is 34. This month we had intercourse on 7th, 9th and 11th. Her period was due around 24th. Lately for the past few months her period has been on date between 22nd and 24th of every month. This month she has had no periods till date . In addition she had the following: 1. White thick clumpy odourless discharge from vagina on 20th and 21st 2. White watery odourless discharge from vagina during 22nd-24th 3. On 25th and 26th the discharge reduced considerably but upon walking for some time or doing some homely activities discharge, still white and watery, occurred in small quantities 4. She sometimes complains of non localized pain (not severe) in the abdomen (both top and bottom) that is not there since 26th 5. If she is at rest there is no pain 6. She complains of back pain sometimes 7. She feels her breasts might have grown a bit and is softer than earlier Is she Pregnant? What are the dos and donts?