Hi wlr. Good advice from sheila99. It's always good to get things checked out. Try not to be too anxious as the first peri meno symptom in many women is a change to bleeding patterns. Periods become longer or shorter. Further apart or closer together. You can have spotting between periods and the feeling that a period must be imminent but then nothing happens. The thing that must always be investigated though is bleeding after sex as this is not a normal symptom.
Hormone levels begin to fluctuate and our normal cycle is disrupted as the hormones which dictate when bleeding starts and stops are no longer stable. Have a good read of our posts on here and use the search box to narrow down your search.
Let us know how you get on.
Taz x