Don’t know if I have posted in correct area. GP appointment for a different topic but mentioned I have been experiencing bleeding every 2 weeks, its got so regular lately I have started to note it in my diary. I have the Nexplanon implant fitted two years ago, due for removal January 2020 so I assumed GP would say what an inconvenience and offer some pills to regulate bleeding. I also mentioned I have put on weight which is not me as I usually find it easy to lose but I am approaching 36 so I know that things slow down.
I was shocked that she actually suggested this could be the peri menopause. She took bloods so that FSH levels can be checked and said the bleeding isn’t normal and my body could be giving me a sign. Irregular bleeding is the number one sign. I have no children and not 100% sure i want to have any but since the appointment I have been preoccupied that the decision may be slipping out of my hands. My mind is racing and I’m now googling menopause symptoms and utterly convinced i have them all 
and that the blood result will show motherhood won’t be for me. I feel oddly that I haven’t been feeling myself the past few weeks and this has been what’s been wrong.
I have been in a relationship 2+ years and have discussed children a few times and both said it would be an option but never in a very serious conversation but now I’m thinking this option is slipping away. I feel quite down about this and that I’ve ‘wasted’ my most fertile years but I was never interested in having children in my twenties.
Am I now overthinking this? Is the GP just being diligent? I can’t stop thinking that the news won’t be good and GP said further tests could check for egg count etc if I wanted to via private clinics. I just feel very shocked and that a decision I thought would be mine to make won’t be 
I’ve been naive to think I could decide anytime to have children but biology is biology